1161497892 has 48 divisors (see below), whose sum is σ = 2856591360. Its totient is φ = 366301728.

The previous prime is 1161497837. The next prime is 1161497893. The reversal of 1161497892 is 2987941611.

It is not an unprimeable number, because it can be changed into a prime (1161497893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193813 + ... + 199715.

It is an arithmetic number, because the mean of its divisors is an integer number (59512320).

Almost surely, 2^1161497892 is an apocalyptic number.

1161497892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1161497892 is an abundant number, since it is smaller than the sum of its proper divisors (1695093468).

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

1161497892 is a wasteful number, since it uses less digits than its factorization.

1161497892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6792 (or 6790 counting only the distinct ones).

The product of its digits is 217728, while the sum is 48.

The square root of 1161497892 is about 34080.7554493735. The cubic root of 1161497892 is about 1051.1696390099.

The spelling of 1161497892 in words is "one billion, one hundred sixty-one million, four hundred ninety-seven thousand, eight hundred ninety-two".