1959663980 has 24 divisors (see below), whose sum is σ = 4257202320. Its totient is φ = 756835520.

The previous prime is 1959663961. The next prime is 1959663997. The reversal of 1959663980 is 893669591.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1688786 + ... + 1689945.

It is an arithmetic number, because the mean of its divisors is an integer number (177383430).

Almost surely, 2^1959663980 is an apocalyptic number.

1959663980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1959663980 is an abundant number, since it is smaller than the sum of its proper divisors (2297538340).

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

1959663980 is a wasteful number, since it uses less digits than its factorization.

1959663980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3378769 (or 3378767 counting only the distinct ones).

The product of its (nonzero) digits is 3149280, while the sum is 56.

The square root of 1959663980 is about 44268.0921206234. The cubic root of 1959663980 is about 1251.3934285084.

The spelling of 1959663980 in words is "one billion, nine hundred fifty-nine million, six hundred sixty-three thousand, nine hundred eighty".