1939707994756 has 81 divisors (see below), whose sum is σ = 4026745921359. Its totient is φ = 815183923008.

The previous prime is 1939707994729. The next prime is 1939707994781. The reversal of 1939707994756 is 6574997079391.

The square root of 1939707994756 is 1392734.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 235743265156 + 1703964729600 = 485534^2 + 1305360^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1033407690 + ... + 1033409566.

Almost surely, 2^{1939707994756} is an apocalyptic number.

1939707994756 is the 1392734-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1939707994756

1939707994756 is an abundant number, since it is smaller than the sum of its proper divisors (2087037926603).

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

1939707994756 is an frugal number, since it uses more digits than its factorization.

1939707994756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3878 (or 1939 counting only the distinct ones).

The product of its (nonzero) digits is 810152280, while the sum is 76.

The spelling of 1939707994756 in words is "one trillion, nine hundred thirty-nine billion, seven hundred seven million, nine hundred ninety-four thousand, seven hundred fifty-six".