18954462377 has 4 divisors (see below), whose sum is σ = 19952065680. Its totient is φ = 17956859076.

The previous prime is 18954462361. The next prime is 18954462383. The reversal of 18954462377 is 77326445981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77326445981 = 137 ⋅564426613.

It is a cyclic number.

It is not a de Polignac number, because 18954462377 - 2⁴ = 18954462361 is a prime.

It is a super-2 number, since 2×18954462377² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18954461377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 498801623 + ... + 498801660.

It is an arithmetic number, because the mean of its divisors is an integer number (4988016420).

Almost surely, 2^18954462377 is an apocalyptic number.

It is an amenable number.

18954462377 is a deficient number, since it is larger than the sum of its proper divisors (997603303).

18954462377 is an equidigital number, since it uses as much as digits as its factorization.

18954462377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997603302.

The product of its digits is 10160640, while the sum is 56.

The spelling of 18954462377 in words is "eighteen billion, nine hundred fifty-four million, four hundred sixty-two thousand, three hundred seventy-seven".