18472797 has 24 divisors (see below), whose sum is σ = 31549440. Its totient is φ = 10190880.

The previous prime is 18472789. The next prime is 18472823. The reversal of 18472797 is 79727481.

It is a happy number.

It is not a de Polignac number, because 18472797 - 2³ = 18472789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18472787) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3229 + ... + 6882.

It is an arithmetic number, because the mean of its divisors is an integer number (1314560).

Almost surely, 2^18472797 is an apocalyptic number.

It is an amenable number.

18472797 is a deficient number, since it is larger than the sum of its proper divisors (13076643).

18472797 is a wasteful number, since it uses less digits than its factorization.

18472797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10153 (or 10150 counting only the distinct ones).

The product of its digits is 197568, while the sum is 45.

The square root of 18472797 is about 4297.9991856677. Note that the first 3 decimals coincide. The cubic root of 18472797 is about 264.3489273954.

The spelling of 18472797 in words is "eighteen million, four hundred seventy-two thousand, seven hundred ninety-seven".