18372275 has 12 divisors (see below), whose sum is σ = 23095992. Its totient is φ = 14495040.

The previous prime is 18372269. The next prime is 18372281. The reversal of 18372275 is 57227381.

It is an interprime number because it is at equal distance from previous prime (18372269) and next prime (18372281).

It is not a de Polignac number, because 18372275 - 2¹⁴ = 18355891 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3209 + ... + 6858.

It is an arithmetic number, because the mean of its divisors is an integer number (1924666).

Almost surely, 2^18372275 is an apocalyptic number.

18372275 is a deficient number, since it is larger than the sum of its proper divisors (4723717).

18372275 is a wasteful number, since it uses less digits than its factorization.

18372275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10150 (or 10145 counting only the distinct ones).

The product of its digits is 23520, while the sum is 35.

The square root of 18372275 is about 4286.2891876307. The cubic root of 18372275 is about 263.8685592628.

The spelling of 18372275 in words is "eighteen million, three hundred seventy-two thousand, two hundred seventy-five".