1161126657 has 24 divisors (see below), whose sum is σ = 1755595296. Its totient is φ = 766832832.

The previous prime is 1161126653. The next prime is 1161126671. The reversal of 1161126657 is 7566211611.

It is a happy number.

1161126657 is a `hidden beast` number, since 11 + 611 + 26 + 6 + 5 + 7 = 666.

It is not a de Polignac number, because 1161126657 - 2² = 1161126653 is a prime.

It is a super-2 number, since 2×1161126657² = 2696430227191991298, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1161126653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3673 + ... + 48329.

It is an arithmetic number, because the mean of its divisors is an integer number (73149804).

Almost surely, 2^1161126657 is an apocalyptic number.

It is an amenable number.

1161126657 is a deficient number, since it is larger than the sum of its proper divisors (594468639).

1161126657 is an equidigital number, since it uses as much as digits as its factorization.

1161126657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44779 (or 44767 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 1161126657 is about 34075.3086119554. The cubic root of 1161126657 is about 1051.0576363549.

The spelling of 1161126657 in words is "one billion, one hundred sixty-one million, one hundred twenty-six thousand, six hundred fifty-seven".