1956994220 has 24 divisors (see below), whose sum is σ = 4165988064. Its totient is φ = 772073856.

The previous prime is 1956994183. The next prime is 1956994279. The reversal of 1956994220 is 224996591.

It is a happy number.

It is a super-2 number, since 2×1956994220² = 7659652754226816800, which contains 22 as substring.

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, 668744 + ... + 671663.

It is an arithmetic number, because the mean of its divisors is an integer number (173582836).

Almost surely, 2^1956994220 is an apocalyptic number.

1956994220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1956994220 is an abundant number, since it is smaller than the sum of its proper divisors (2208993844).

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

1956994220 is a wasteful number, since it uses less digits than its factorization.

1956994220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340489 (or 1340487 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 1956994220 is about 44237.9273926797. The cubic root of 1956994220 is about 1250.8248891266.

The spelling of 1956994220 in words is "one billion, nine hundred fifty-six million, nine hundred ninety-four thousand, two hundred twenty".