18269530 has 16 divisors (see below), whose sum is σ = 33030504. Its totient is φ = 7275520.

The previous prime is 18269519. The next prime is 18269549. The reversal of 18269530 is 3596281.

It can be written as a sum of positive squares in 4 ways, for example, as 10712529 + 7557001 = 3273^2 + 2749^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1591 + ... + 6250.

Almost surely, 2^18269530 is an apocalyptic number.

18269530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18269530 is a deficient number, since it is larger than the sum of its proper divisors (14760974).

18269530 is a wasteful number, since it uses less digits than its factorization.

18269530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8081.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 18269530 is about 4274.2870750571. The cubic root of 18269530 is about 263.3757538170.

The spelling of 18269530 in words is "eighteen million, two hundred sixty-nine thousand, five hundred thirty".