1162539897 has 16 divisors (see below), whose sum is σ = 1606725120. Its totient is φ = 746899200.

The previous prime is 1162539881. The next prime is 1162539901. The reversal of 1162539897 is 7989352611.

It is not a de Polignac number, because 1162539897 - 2⁴ = 1162539881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1162539857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3522 + ... + 48347.

It is an arithmetic number, because the mean of its divisors is an integer number (100420320).

Almost surely, 2^1162539897 is an apocalyptic number.

It is an amenable number.

1162539897 is a deficient number, since it is larger than the sum of its proper divisors (444185223).

1162539897 is a wasteful number, since it uses less digits than its factorization.

1162539897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52144.

The product of its digits is 816480, while the sum is 51.

The square root of 1162539897 is about 34096.0393154396. The cubic root of 1162539897 is about 1051.4838874312.

The spelling of 1162539897 in words is "one billion, one hundred sixty-two million, five hundred thirty-nine thousand, eight hundred ninety-seven".