1171555984 has 45 divisors (see below), whose sum is σ = 2335642083. Its totient is φ = 569280096.

The previous prime is 1171555963. The next prime is 1171556011. The reversal of 1171555984 is 4895551711.

The square root of 1171555984 is 34228.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5887117 + ... + 5887315.

Almost surely, 2^1171555984 is an apocalyptic number.

1171555984 is the 34228-th square number.

It is an amenable number.

1171555984 is a deficient number, since it is larger than the sum of its proper divisors (1164086099).

1171555984 is an frugal number, since it uses more digits than its factorization.

1171555984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492 (or 244 counting only the distinct ones).

The product of its digits is 252000, while the sum is 46.

The cubic root of 1171555984 is about 1054.1951541393.

The spelling of 1171555984 in words is "one billion, one hundred seventy-one million, five hundred fifty-five thousand, nine hundred eighty-four".