18375700249 has 9 divisors (see below), whose sum is σ = 18479440533. Its totient is φ = 18272541372.

The previous prime is 18375700241. The next prime is 18375700253. The reversal of 18375700249 is 94200757381.

The square root of 18375700249 is 135557.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 18375700249 - 2³ = 18375700241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18375700199 and 18375700208.

It is not an unprimeable number, because it can be changed into a prime (18375700241) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 38362392 + ... + 38362870.

Almost surely, 2^18375700249 is an apocalyptic number.

18375700249 is the 135557-th square number.

18375700249 is the 67779-th centered octagonal number.

It is an amenable number.

18375700249 is a deficient number, since it is larger than the sum of its proper divisors (103740284).

18375700249 is an frugal number, since it uses more digits than its factorization.

18375700249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524 (or 762 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 46.

The spelling of 18375700249 in words is "eighteen billion, three hundred seventy-five million, seven hundred thousand, two hundred forty-nine".