18936036672 has 112 divisors (see below), whose sum is σ = 58427721600. Its totient is φ = 5410277376.

The previous prime is 18936036661. The next prime is 18936036703. The reversal of 18936036672 is 27663063981.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-3 number, since 3×18936036672³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77913 + ... + 209624.

Almost surely, 2^18936036672 is an apocalyptic number.

18936036672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18936036672 is an abundant number, since it is smaller than the sum of its proper divisors (39491684928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18936036672 is an equidigital number, since it uses as much as digits as its factorization.

18936036672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287573 (or 287549 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 51.

It can be divided in two parts, 1893603 and 6672, that added together give a triangular number (1900275 = T₁₉₄₉).

The spelling of 18936036672 in words is "eighteen billion, nine hundred thirty-six million, thirty-six thousand, six hundred seventy-two".