18135902 has 8 divisors (see below), whose sum is σ = 27411912. Its totient is φ = 8998600.

The previous prime is 18135881. The next prime is 18135907. The reversal of 18135902 is 20953181.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18135907) 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, 34349 + ... + 34872.

It is an arithmetic number, because the mean of its divisors is an integer number (3426489).

Almost surely, 2^18135902 is an apocalyptic number.

18135902 is a deficient number, since it is larger than the sum of its proper divisors (9276010).

18135902 is a wasteful number, since it uses less digits than its factorization.

18135902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69354.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 18135902 is about 4258.6267739730. The cubic root of 18135902 is about 262.7320493814.

The spelling of 18135902 in words is "eighteen million, one hundred thirty-five thousand, nine hundred two".