1161154432 has 64 divisors (see below), whose sum is σ = 2417032800. Its totient is φ = 554932224.

The previous prime is 1161154427. The next prime is 1161154433. The reversal of 1161154432 is 2344511611.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×1161154432² = 2696559229906485248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1161154432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161154433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380818 + ... + 383854.

Almost surely, 2^1161154432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1161154432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1208516400).

1161154432 is an abundant number, since it is smaller than the sum of its proper divisors (1255878368).

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

1161154432 is a wasteful number, since it uses less digits than its factorization.

1161154432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3183 (or 3171 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 1161154432 is about 34075.7161626869. The cubic root of 1161154432 is about 1051.0660169775.

The spelling of 1161154432 in words is "one billion, one hundred sixty-one million, one hundred fifty-four thousand, four hundred thirty-two".