1956620256 has 48 divisors (see below), whose sum is σ = 5313243600. Its totient is φ = 629715968.

The previous prime is 1956620251. The next prime is 1956620257. The reversal of 1956620256 is 6520266591.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1956620251) 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, 348621 + ... + 354188.

It is an arithmetic number, because the mean of its divisors is an integer number (110692575).

Almost surely, 2^1956620256 is an apocalyptic number.

1956620256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1956620256 is an abundant number, since it is smaller than the sum of its proper divisors (3356623344).

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

1956620256 is a wasteful number, since it uses less digits than its factorization.

1956620256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702851 (or 702843 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 1956620256 is about 44233.7004556481. The cubic root of 1956620256 is about 1250.7452102544.

The spelling of 1956620256 in words is "one billion, nine hundred fifty-six million, six hundred twenty thousand, two hundred fifty-six".