18352234931 has 4 divisors (see below), whose sum is σ = 18366150000. Its totient is φ = 18338319864.

The previous prime is 18352234921. The next prime is 18352234937. The reversal of 18352234931 is 13943225381.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13943225381 = 3061 ⋅4555121.

It is a cyclic number.

It is not a de Polignac number, because 18352234931 - 2⁶ = 18352234867 is a prime.

It is a super-2 number, since 2×18352234931² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18352234937) 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, 6955556 + ... + 6958193.

It is an arithmetic number, because the mean of its divisors is an integer number (4591537500).

Almost surely, 2^18352234931 is an apocalyptic number.

18352234931 is a deficient number, since it is larger than the sum of its proper divisors (13915069).

18352234931 is a wasteful number, since it uses less digits than its factorization.

18352234931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13915068.

The product of its digits is 155520, while the sum is 41.

The spelling of 18352234931 in words is "eighteen billion, three hundred fifty-two million, two hundred thirty-four thousand, nine hundred thirty-one".