18034931 has 4 divisors (see below), whose sum is σ = 18454392. Its totient is φ = 17615472.

The previous prime is 18034927. The next prime is 18034937. The reversal of 18034931 is 13943081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13943081 = 53 ⋅263077.

It is a cyclic number.

It is not a de Polignac number, because 18034931 - 2² = 18034927 is a prime.

It is a super-2 number, since 2×18034931² = 650517472349522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18034894 and 18034903.

It is not an unprimeable number, because it can be changed into a prime (18034937) 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, 209666 + ... + 209751.

It is an arithmetic number, because the mean of its divisors is an integer number (4613598).

Almost surely, 2^18034931 is an apocalyptic number.

18034931 is a deficient number, since it is larger than the sum of its proper divisors (419461).

18034931 is an equidigital number, since it uses as much as digits as its factorization.

18034931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419460.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 18034931 is about 4246.7553496758. The cubic root of 18034931 is about 262.2435578720.

The spelling of 18034931 in words is "eighteen million, thirty-four thousand, nine hundred thirty-one".