1161404523 has 12 divisors (see below), whose sum is σ = 1700565880. Its totient is φ = 763662816.

The previous prime is 1161404449. The next prime is 1161404539. The reversal of 1161404523 is 3254041611.

It is a happy number.

1161404523 is a `hidden beast` number, since 1 + 1 + 614 + 0 + 45 + 2 + 3 = 666.

It is not a de Polignac number, because 1161404523 - 2²¹ = 1159307371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161404593) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 883213 + ... + 884526.

Almost surely, 2^1161404523 is an apocalyptic number.

1161404523 is a deficient number, since it is larger than the sum of its proper divisors (539161357).

1161404523 is a wasteful number, since it uses less digits than its factorization.

1161404523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1767818 (or 1767815 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1161404523 is about 34079.3856018561. The cubic root of 1161404523 is about 1051.1414715638.

The spelling of 1161404523 in words is "one billion, one hundred sixty-one million, four hundred four thousand, five hundred twenty-three".