2147668956 has 36 divisors (see below), whose sum is σ = 5748174432. Its totient is φ = 673778304.

The previous prime is 2147668937. The next prime is 2147668961. The reversal of 2147668956 is 6598667412.

2147668956 is a `hidden beast` number, since 21 + 476 + 68 + 95 + 6 = 666.

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

It is a super-2 number, since 2×2147668956² = 9224963889132259872, which contains 22 as substring.

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, 1754020 + ... + 1755243.

It is an arithmetic number, because the mean of its divisors is an integer number (159671512).

Almost surely, 2^2147668956 is an apocalyptic number.

It is an amenable number.

2147668956 is an abundant number, since it is smaller than the sum of its proper divisors (3600505476).

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

2147668956 is a wasteful number, since it uses less digits than its factorization.

2147668956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3509290 (or 3509285 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 2147668956 is about 46342.9493666512. The cubic root of 2147668956 is about 1290.1962636305.

The spelling of 2147668956 in words is "two billion, one hundred forty-seven million, six hundred sixty-eight thousand, nine hundred fifty-six".