18868031 has 8 divisors (see below), whose sum is σ = 23222304. Its totient is φ = 14928480.

The previous prime is 18868021. The next prime is 18868043. The reversal of 18868031 is 13086881.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18868031 - 2⁶ = 18867967 is a prime.

It is a super-2 number, since 2×18868031² = 712005187633922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18867982 and 18868000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18868001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103580 + ... + 103761.

It is an arithmetic number, because the mean of its divisors is an integer number (2902788).

Almost surely, 2^18868031 is an apocalyptic number.

18868031 is a deficient number, since it is larger than the sum of its proper divisors (4354273).

18868031 is a wasteful number, since it uses less digits than its factorization.

18868031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207361.

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 18868031 is about 4343.7346834262. The cubic root of 18868031 is about 266.2209284458.

The spelling of 18868031 in words is "eighteen million, eight hundred sixty-eight thousand, thirty-one".