18040692 has 24 divisors (see below), whose sum is σ = 42206752. Its totient is φ = 5997600.

The previous prime is 18040691. The next prime is 18040703. The reversal of 18040692 is 29604081.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18040691) 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, 3267 + ... + 6837.

Almost surely, 2^18040692 is an apocalyptic number.

18040692 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18040692 is an abundant number, since it is smaller than the sum of its proper divisors (24166060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18040692 is a wasteful number, since it uses less digits than its factorization.

18040692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3999 (or 3997 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 18040692 is about 4247.4335780563. The cubic root of 18040692 is about 262.2714782135.

The spelling of 18040692 in words is "eighteen million, forty thousand, six hundred ninety-two".