18135910 has 32 divisors (see below), whose sum is σ = 35747712. Its totient is φ = 6583680.

The previous prime is 18135907. The next prime is 18135917. The reversal of 18135910 is 1953181.

It is a super-2 number, since 2×18135910² = 657822463056200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18135917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6787 + ... + 9073.

It is an arithmetic number, because the mean of its divisors is an integer number (1117116).

Almost surely, 2^18135910 is an apocalyptic number.

18135910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18135910 is a deficient number, since it is larger than the sum of its proper divisors (17611802).

18135910 is a wasteful number, since it uses less digits than its factorization.

18135910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2368.

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 18135910 is about 4258.6277132428. The cubic root of 18135910 is about 262.7320880130.

The spelling of 18135910 in words is "eighteen million, one hundred thirty-five thousand, nine hundred ten".