18472063 has 4 divisors (see below), whose sum is σ = 19067968. Its totient is φ = 17876160.

The previous prime is 18472061. The next prime is 18472087. The reversal of 18472063 is 36027481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36027481 = 7 ⋅5146783.

It is a cyclic number.

It is not a de Polignac number, because 18472063 - 2¹ = 18472061 is a prime.

It is a super-2 number, since 2×18472063² = 682434222951938, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 595873 = 18472063 / (1 + 8 + 4 + 7 + 2 + 0 + 6 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18472061) 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, 297906 + ... + 297967.

It is an arithmetic number, because the mean of its divisors is an integer number (4766992).

Almost surely, 2^18472063 is an apocalyptic number.

18472063 is a deficient number, since it is larger than the sum of its proper divisors (595905).

18472063 is an equidigital number, since it uses as much as digits as its factorization.

18472063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595904.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 18472063 is about 4297.9137962505. The cubic root of 18472063 is about 264.3454261267.

The spelling of 18472063 in words is "eighteen million, four hundred seventy-two thousand, sixty-three".