18852290 has 16 divisors (see below), whose sum is σ = 34059960. Its totient is φ = 7512960.

The previous prime is 18852287. The next prime is 18852293. The reversal of 18852290 is 9225881.

It is an interprime number because it is at equal distance from previous prime (18852287) and next prime (18852293).

It can be written as a sum of positive squares in 4 ways, for example, as 17297281 + 1555009 = 4159^2 + 1247^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18852290.

It is not an unprimeable number, because it can be changed into a prime (18852293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 545 + ... + 6164.

Almost surely, 2^18852290 is an apocalyptic number.

18852290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18852290 is a deficient number, since it is larger than the sum of its proper divisors (15207670).

18852290 is a wasteful number, since it uses less digits than its factorization.

18852290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6997.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 18852290 is about 4341.9223853035. The cubic root of 18852290 is about 266.1468746220.

The spelling of 18852290 in words is "eighteen million, eight hundred fifty-two thousand, two hundred ninety".