1171663904 has 24 divisors (see below), whose sum is σ = 2369059308. Its totient is φ = 569998080.

The previous prime is 1171663859. The next prime is 1171663921. The reversal of 1171663904 is 4093661711.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1103568400 + 68095504 = 33220^2 + 8252^2 .

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, 493607 + ... + 495974.

Almost surely, 2^1171663904 is an apocalyptic number.

It is an amenable number.

1171663904 is an abundant number, since it is smaller than the sum of its proper divisors (1197395404).

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

1171663904 is an equidigital number, since it uses as much as digits as its factorization.

1171663904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989628 (or 989620 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 1171663904 is about 34229.5764507830. The cubic root of 1171663904 is about 1054.2275228436.

The spelling of 1171663904 in words is "one billion, one hundred seventy-one million, six hundred sixty-three thousand, nine hundred four".