1161402566 has 48 divisors (see below), whose sum is σ = 1919865024. Its totient is φ = 526463616.

The previous prime is 1161402533. The next prime is 1161402581. The reversal of 1161402566 is 6652041611.

It is a super-2 number, since 2×1161402566² = 2697711840622768712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2062601 + ... + 2063163.

It is an arithmetic number, because the mean of its divisors is an integer number (39997188).

Almost surely, 2^1161402566 is an apocalyptic number.

1161402566 is a deficient number, since it is larger than the sum of its proper divisors (758462458).

1161402566 is a wasteful number, since it uses less digits than its factorization.

1161402566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725 (or 708 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 1161402566 is about 34079.3568894720. The cubic root of 1161402566 is about 1051.1408811622.

The spelling of 1161402566 in words is "one billion, one hundred sixty-one million, four hundred two thousand, five hundred sixty-six".