18074690 has 8 divisors (see below), whose sum is σ = 32534460. Its totient is φ = 7229872.

The previous prime is 18074671. The next prime is 18074699. The reversal of 18074690 is 9647081.

It can be written as a sum of positive squares in 2 ways, for example, as 16459249 + 1615441 = 4057^2 + 1271^2 .

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

It is a super-2 number, since 2×18074690² = 653388837192200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18074690.

It is not an unprimeable number, because it can be changed into a prime (18074699) 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, 903725 + ... + 903744.

Almost surely, 2^18074690 is an apocalyptic number.

18074690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18074690 is a deficient number, since it is larger than the sum of its proper divisors (14459770).

18074690 is a wasteful number, since it uses less digits than its factorization.

18074690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1807476.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 18074690 is about 4251.4338757647. The cubic root of 18074690 is about 262.4361265604.

The spelling of 18074690 in words is "eighteen million, seventy-four thousand, six hundred ninety".