18190316 has 12 divisors (see below), whose sum is σ = 32510688. Its totient is φ = 8901552.

The previous prime is 18190307. The next prime is 18190327. The reversal of 18190316 is 61309181.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48191 + ... + 48566.

It is an arithmetic number, because the mean of its divisors is an integer number (2709224).

Almost surely, 2^18190316 is an apocalyptic number.

It is an amenable number.

18190316 is a deficient number, since it is larger than the sum of its proper divisors (14320372).

18190316 is a wasteful number, since it uses less digits than its factorization.

18190316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96808 (or 96806 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 18190316 is about 4265.0106682164. The cubic root of 18190316 is about 262.9945494685.

Adding to 18190316 its reverse (61309181), we get a palindrome (79499497).

The spelling of 18190316 in words is "eighteen million, one hundred ninety thousand, three hundred sixteen".