1980428772 has 48 divisors (see below), whose sum is σ = 5314816640. Its totient is φ = 562228992.

The previous prime is 1980428761. The next prime is 1980428783. The reversal of 1980428772 is 2778240891.

1980428772 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1980428761) and next prime (1980428783).

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, 61897 + ... + 88272.

Almost surely, 2^1980428772 is an apocalyptic number.

1980428772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1980428772 is an abundant number, since it is smaller than the sum of its proper divisors (3334387868).

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

1980428772 is a wasteful number, since it uses less digits than its factorization.

1980428772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150340 (or 150338 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 48.

The square root of 1980428772 is about 44502.0086288248. The cubic root of 1980428772 is about 1255.7978708700.

The spelling of 1980428772 in words is "one billion, nine hundred eighty million, four hundred twenty-eight thousand, seven hundred seventy-two".