18514690 has 8 divisors (see below), whose sum is σ = 33326460. Its totient is φ = 7405872.

The previous prime is 18514687. The next prime is 18514697. The reversal of 18514690 is 9641581.

It can be written as a sum of positive squares in 2 ways, for example, as 16949689 + 1565001 = 4117^2 + 1251^2 .

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

It is a super-2 number, since 2×18514690² = 685587491592200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18514697) 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, 925725 + ... + 925744.

Almost surely, 2^18514690 is an apocalyptic number.

18514690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18514690 is a deficient number, since it is larger than the sum of its proper divisors (14811770).

18514690 is a wasteful number, since it uses less digits than its factorization.

18514690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851476.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 18514690 is about 4302.8699724719. The cubic root of 18514690 is about 264.5486085551.

The spelling of 18514690 in words is "eighteen million, five hundred fourteen thousand, six hundred ninety".