1161015104 has 14 divisors (see below), whose sum is σ = 2303889474. Its totient is φ = 580507520.

The previous prime is 1161015101. The next prime is 1161015109. The reversal of 1161015104 is 4015101611.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 625000000 + 536015104 = 25000^2 + 23152^2 .

It is a super-2 number, since 2×1161015104² = 2695912143432261632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161015101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9070367 + ... + 9070494.

Almost surely, 2^1161015104 is an apocalyptic number.

It is an amenable number.

1161015104 is a deficient number, since it is larger than the sum of its proper divisors (1142874370).

1161015104 is an equidigital number, since it uses as much as digits as its factorization.

1161015104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18140873 (or 18140863 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 20.

The square root of 1161015104 is about 34073.6717129223. The cubic root of 1161015104 is about 1051.0239758331.

Adding to 1161015104 its reverse (4015101611), we get a palindrome (5176116715).

The spelling of 1161015104 in words is "one billion, one hundred sixty-one million, fifteen thousand, one hundred four".