1171120978 has 8 divisors (see below), whose sum is σ = 1817256780. Its totient is φ = 565368720.

The previous prime is 1171120903. The next prime is 1171121023. The reversal of 1171120978 is 8790211711.

It can be written as a sum of positive squares in 2 ways, for example, as 1153757089 + 17363889 = 33967^2 + 4167^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1171120978² = 2743048690223352968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10095813 + ... + 10095928.

Almost surely, 2^1171120978 is an apocalyptic number.

1171120978 is a deficient number, since it is larger than the sum of its proper divisors (646135802).

1171120978 is a wasteful number, since it uses less digits than its factorization.

1171120978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20191772.

The product of its (nonzero) digits is 7056, while the sum is 37.

The square root of 1171120978 is about 34221.6448757216. The cubic root of 1171120978 is about 1054.0646615883.

The spelling of 1171120978 in words is "one billion, one hundred seventy-one million, one hundred twenty thousand, nine hundred seventy-eight".