1939976064 has 96 divisors (see below), whose sum is σ = 6011951400. Its totient is φ = 596911104.

The previous prime is 1939976053. The next prime is 1939976081. The reversal of 1939976064 is 4606799391.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1939976064.

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, 49794 + ... + 79745.

Almost surely, 2^1939976064 is an apocalyptic number.

It is an amenable number.

1939976064 is an abundant number, since it is smaller than the sum of its proper divisors (4071975336).

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

1939976064 is a wasteful number, since it uses less digits than its factorization.

1939976064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129572 (or 129557 counting only the distinct ones).

The product of its (nonzero) digits is 2204496, while the sum is 54.

The square root of 1939976064 is about 44045.1593708094. The cubic root of 1939976064 is about 1247.1885751060.

The spelling of 1939976064 in words is "one billion, nine hundred thirty-nine million, nine hundred seventy-six thousand, sixty-four".