1988620332 has 24 divisors (see below), whose sum is σ = 4884331200. Its totient is φ = 627985296.

The previous prime is 1988620331. The next prime is 1988620343. The reversal of 1988620332 is 2330268891.

It is a super-2 number, since 2×1988620332² = 7909221649687580448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1988620331) 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, 4360782 + ... + 4361237.

It is an arithmetic number, because the mean of its divisors is an integer number (203513800).

Almost surely, 2^1988620332 is an apocalyptic number.

1988620332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1988620332 is an abundant number, since it is smaller than the sum of its proper divisors (2895710868).

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

1988620332 is a wasteful number, since it uses less digits than its factorization.

1988620332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8722045 (or 8722043 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 1988620332 is about 44593.9494999041. The cubic root of 1988620332 is about 1257.5269228664.

The spelling of 1988620332 in words is "one billion, nine hundred eighty-eight million, six hundred twenty thousand, three hundred thirty-two".