18372519250 has 16 divisors (see below), whose sum is σ = 34393356504. Its totient is φ = 7349007600.

The previous prime is 18372519247. The next prime is 18372519251. The reversal of 18372519250 is 5291527381.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2805714961 + 15566804289 = 52969^2 + 124767^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18372519197 and 18372519206.

It is not an unprimeable number, because it can be changed into a prime (18372519251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36744789 + ... + 36745288.

Almost surely, 2^18372519250 is an apocalyptic number.

18372519250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18372519250 is a deficient number, since it is larger than the sum of its proper divisors (16020837254).

18372519250 is an equidigital number, since it uses as much as digits as its factorization.

18372519250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73490094 (or 73490084 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 43.

The spelling of 18372519250 in words is "eighteen billion, three hundred seventy-two million, five hundred nineteen thousand, two hundred fifty".