1161015653 has 12 divisors (see below), whose sum is σ = 1421652960. Its totient is φ = 942778872.

The previous prime is 1161015649. The next prime is 1161015733. The reversal of 1161015653 is 3565101611.

It is not a de Polignac number, because 1161015653 - 2² = 1161015649 is a prime.

It is a super-2 number, since 2×1161015653² = 2695914693022032818, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161015613) 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, 622601 + ... + 624462.

It is an arithmetic number, because the mean of its divisors is an integer number (118471080).

Almost surely, 2^1161015653 is an apocalyptic number.

It is an amenable number.

1161015653 is a deficient number, since it is larger than the sum of its proper divisors (260637307).

1161015653 is a wasteful number, since it uses less digits than its factorization.

1161015653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247096 (or 1247089 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 1161015653 is about 34073.6797689947. The cubic root of 1161015653 is about 1051.0241414962.

The spelling of 1161015653 in words is "one billion, one hundred sixty-one million, fifteen thousand, six hundred fifty-three".