18856372450 has 12 divisors (see below), whose sum is σ = 35072852850. Its totient is φ = 7542548960.

The previous prime is 18856372441. The next prime is 18856372471. The reversal of 18856372450 is 5427365881.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 13139349129 + 5717023321 = 114627^2 + 75611^2 .

It is a super-3 number, since 3×18856372450³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18856372394 and 18856372403.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 188563675 + ... + 188563774.

Almost surely, 2^18856372450 is an apocalyptic number.

18856372450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18856372450 is a deficient number, since it is larger than the sum of its proper divisors (16216480400).

18856372450 is a wasteful number, since it uses less digits than its factorization.

18856372450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377127461 (or 377127456 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 49.

The spelling of 18856372450 in words is "eighteen billion, eight hundred fifty-six million, three hundred seventy-two thousand, four hundred fifty".