1171877664 has 48 divisors (see below), whose sum is σ = 3113262432. Its totient is φ = 385916928.

The previous prime is 1171877657. The next prime is 1171877689. The reversal of 1171877664 is 4667781711.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65569 + ... + 81504.

It is an arithmetic number, because the mean of its divisors is an integer number (64859634).

Almost surely, 2^1171877664 is an apocalyptic number.

It is an amenable number.

1171877664 is an abundant number, since it is smaller than the sum of its proper divisors (1941384768).

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

1171877664 is a wasteful number, since it uses less digits than its factorization.

1171877664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147169 (or 147161 counting only the distinct ones).

The product of its digits is 395136, while the sum is 48.

The square root of 1171877664 is about 34232.6987542613. The cubic root of 1171877664 is about 1054.2916305260.

It can be divided in two parts, 117 and 1877664, that added together give a palindrome (1877781).

The spelling of 1171877664 in words is "one billion, one hundred seventy-one million, eight hundred seventy-seven thousand, six hundred sixty-four".