1161379012 has 12 divisors (see below), whose sum is σ = 2032666300. Its totient is φ = 580617216.

The previous prime is 1161378991. The next prime is 1161379013. The reversal of 1161379012 is 2109731611.

It can be written as a sum of positive squares in 2 ways, for example, as 864712836 + 296666176 = 29406^2 + 17224^2 .

It is a super-2 number, since 2×1161379012² = 2697602419028192288, which contains 22 as substring.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (1161379013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36148 + ... + 60244.

Almost surely, 2^1161379012 is an apocalyptic number.

It is an amenable number.

1161379012 is a deficient number, since it is larger than the sum of its proper divisors (871287288).

1161379012 is a wasteful number, since it uses less digits than its factorization.

1161379012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36150 (or 36148 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 1161379012 is about 34079.0113119498. The cubic root of 1161379012 is about 1051.1337751738.

The spelling of 1161379012 in words is "one billion, one hundred sixty-one million, three hundred seventy-nine thousand, twelve".