1939552660 has 12 divisors (see below), whose sum is σ = 4073060628. Its totient is φ = 775821056.

The previous prime is 1939552639. The next prime is 1939552663. The reversal of 1939552660 is 662559391.

It can be written as a sum of positive squares in 2 ways, for example, as 666775684 + 1272776976 = 25822^2 + 35676^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1939552660.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1939552663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48488797 + ... + 48488836.

It is an arithmetic number, because the mean of its divisors is an integer number (339421719).

Almost surely, 2^1939552660 is an apocalyptic number.

1939552660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1939552660 is an abundant number, since it is smaller than the sum of its proper divisors (2133507968).

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

1939552660 is a wasteful number, since it uses less digits than its factorization.

1939552660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96977642 (or 96977640 counting only the distinct ones).

The product of its (nonzero) digits is 437400, while the sum is 46.

The square root of 1939552660 is about 44040.3526325573. The cubic root of 1939552660 is about 1247.0978346303.

The spelling of 1939552660 in words is "one billion, nine hundred thirty-nine million, five hundred fifty-two thousand, six hundred sixty".