18476474674329 has 275 divisors, whose sum is σ = 34127917458853. Its totient is φ = 10002302079336.

The previous prime is 18476474674321. The next prime is 18476474674337. The reversal of 18476474674329 is 92347647467481.

The square root of 18476474674329 is 4298427.

It is a perfect power (a square), and thus also a powerful number.

18476474674329 is a `hidden beast` number, since 1 + 8 + 4 + 7 + 64 + 74 + 67 + 432 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (18476474674321) and next prime (18476474674337).

It is not a de Polignac number, because 18476474674329 - 2³ = 18476474674321 is a prime.

It is a super-2 number, since 2×18476474674329² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a taxicab number since it can be written as a sum of two cubes in more than one way. Here 18476474674329 = 5985³ + 26334³ = 18696³ + 22857³.

It is not an unprimeable number, because it can be changed into a prime (18476474674321) by changing a digit.

It is a polite number, since it can be written in 274 ways as a sum of consecutive naturals, for example, 972446035482 + ... + 972446035500.

Almost surely, 2^{18476474674329} is an apocalyptic number.

18476474674329 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

18476474674329 is the 4298427-th square number.

18476474674329 is the 2149214-th centered octagonal number.

It is an amenable number.

18476474674329 is a deficient number, since it is larger than the sum of its proper divisors (15651442784524).

18476474674329 is an frugal number, since it uses more digits than its factorization.

18476474674329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 29 counting only the distinct ones).

The product of its digits is 1365590016, while the sum is 72.

The spelling of 18476474674329 in words is "eighteen trillion, four hundred seventy-six billion, four hundred seventy-four million, six hundred seventy-four thousand, three hundred twenty-nine".