1161453554 has 16 divisors (see below), whose sum is σ = 1776413592. Its totient is φ = 569332608.

The previous prime is 1161453551. The next prime is 1161453577. The reversal of 1161453554 is 4553541611.

It can be written as a sum of positive squares in 4 ways, for example, as 946977529 + 214476025 = 30773^2 + 14645^2 .

It is not an unprimeable number, because it can be changed into a prime (1161453551) 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, 167582 + ... + 174374.

Almost surely, 2^1161453554 is an apocalyptic number.

1161453554 is a deficient number, since it is larger than the sum of its proper divisors (614960038).

1161453554 is a wasteful number, since it uses less digits than its factorization.

1161453554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8461.

The product of its digits is 36000, while the sum is 35.

The square root of 1161453554 is about 34080.1049587586. The cubic root of 1161453554 is about 1051.1562633643.

The spelling of 1161453554 in words is "one billion, one hundred sixty-one million, four hundred fifty-three thousand, five hundred fifty-four".