1956989966292 has 36 divisors (see below), whose sum is σ = 4992219572340. Its totient is φ = 646345308672.

The previous prime is 1956989966287. The next prime is 1956989966303. The reversal of 1956989966292 is 2926699896591.

1956989966292 is a `hidden beast` number, since 195 + 6 + 9 + 89 + 9 + 66 + 292 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1606921310736 + 350068655556 = 1267644^2 + 591666^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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, 249357693 + ... + 249365540.

Almost surely, 2^{1956989966292} is an apocalyptic number.

1956989966292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1956989966292 is an abundant number, since it is smaller than the sum of its proper divisors (3035229606048).

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

1956989966292 is a wasteful number, since it uses less digits than its factorization.

1956989966292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498723352 (or 498723347 counting only the distinct ones).

The product of its digits is 2040733440, while the sum is 81.

The spelling of 1956989966292 in words is "one trillion, nine hundred fifty-six billion, nine hundred eighty-nine million, nine hundred sixty-six thousand, two hundred ninety-two".