1165156690 has 8 divisors (see below), whose sum is σ = 2097282060. Its totient is φ = 466062672.

The previous prime is 1165156687. The next prime is 1165156709. The reversal of 1165156690 is 966515611.

It can be written as a sum of positive squares in 2 ways, for example, as 1159198209 + 5958481 = 34047^2 + 2441^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1165156690² = 2715180224503512200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58257825 + ... + 58257844.

Almost surely, 2^1165156690 is an apocalyptic number.

1165156690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1165156690 is a deficient number, since it is larger than the sum of its proper divisors (932125370).

1165156690 is a wasteful number, since it uses less digits than its factorization.

1165156690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116515676.

The product of its (nonzero) digits is 48600, while the sum is 40.

The square root of 1165156690 is about 34134.3916014333. The cubic root of 1165156690 is about 1052.2722342150.

The spelling of 1165156690 in words is "one billion, one hundred sixty-five million, one hundred fifty-six thousand, six hundred ninety".