1980185472 has 96 divisors (see below), whose sum is σ = 5998161000. Its totient is φ = 625314816.

The previous prime is 1980185443. The next prime is 1980185503. The reversal of 1980185472 is 2745810891.

1980185472 is a `hidden beast` number, since 1 + 98 + 0 + 18 + 547 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×1980185472² = 7842269007039725568, which contains 22 as substring.

It is a congruent 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, 23347 + ... + 67122.

Almost surely, 2^1980185472 is an apocalyptic number.

1980185472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1980185472 is an abundant number, since it is smaller than the sum of its proper divisors (4017975528).

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

1980185472 is a wasteful number, since it uses less digits than its factorization.

1980185472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90508 (or 90493 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The square root of 1980185472 is about 44499.2749603856. The cubic root of 1980185472 is about 1255.7464429268.

The spelling of 1980185472 in words is "one billion, nine hundred eighty million, one hundred eighty-five thousand, four hundred seventy-two".