1172161432 has 16 divisors (see below), whose sum is σ = 2366864640. Its totient is φ = 540997536.

The previous prime is 1172161391. The next prime is 1172161439. The reversal of 1172161432 is 2341612711.

It is a self number, because there is not a number n which added to its sum of digits gives 1172161432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1172161439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5635288 + ... + 5635495.

It is an arithmetic number, because the mean of its divisors is an integer number (147929040).

Almost surely, 2^1172161432 is an apocalyptic number.

It is an amenable number.

1172161432 is an abundant number, since it is smaller than the sum of its proper divisors (1194703208).

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

1172161432 is a wasteful number, since it uses less digits than its factorization.

1172161432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11270802 (or 11270798 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 1172161432 is about 34236.8431955985. The cubic root of 1172161432 is about 1054.3767219116.

It can be divided in two parts, 11721 and 61432, that added together give a triangular number (73153 = T₃₈₂).

The spelling of 1172161432 in words is "one billion, one hundred seventy-two million, one hundred sixty-one thousand, four hundred thirty-two".