1166678956 has 24 divisors (see below), whose sum is σ = 2135196000. Its totient is φ = 556735872.

The previous prime is 1166678951. The next prime is 1166678963. The reversal of 1166678956 is 6598766611.

It is a happy number.

It is a super-2 number, since 2×1166678956² = 2722279572746499872, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1166678897 and 1166678906.

It is not an unprimeable number, because it can be changed into a prime (1166678951) 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, 28170 + ... + 55918.

It is an arithmetic number, because the mean of its divisors is an integer number (88966500).

Almost surely, 2^1166678956 is an apocalyptic number.

It is an amenable number.

1166678956 is a deficient number, since it is larger than the sum of its proper divisors (968517044).

1166678956 is a wasteful number, since it uses less digits than its factorization.

1166678956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28233 (or 28231 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 55.

The square root of 1166678956 is about 34156.6824501444. The cubic root of 1166678956 is about 1052.7302959702.

The spelling of 1166678956 in words is "one billion, one hundred sixty-six million, six hundred seventy-eight thousand, nine hundred fifty-six".