1171404972 has 36 divisors (see below), whose sum is σ = 2972596536. Its totient is φ = 388945920.

The previous prime is 1171404919. The next prime is 1171404991. The reversal of 1171404972 is 2794041711.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54054 + ... + 72557.

It is an arithmetic number, because the mean of its divisors is an integer number (82572126).

Almost surely, 2^1171404972 is an apocalyptic number.

1171404972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1171404972 is an abundant number, since it is smaller than the sum of its proper divisors (1801191564).

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

1171404972 is a wasteful number, since it uses less digits than its factorization.

1171404972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126878 (or 126873 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 1171404972 is about 34225.7939571897. The cubic root of 1171404972 is about 1054.1498574110.

The spelling of 1171404972 in words is "one billion, one hundred seventy-one million, four hundred four thousand, nine hundred seventy-two".