1165645036 has 6 divisors (see below), whose sum is σ = 2039878820. Its totient is φ = 582822516.

The previous prime is 1165645031. The next prime is 1165645049. The reversal of 1165645036 is 6305465611.

It is a junction number, because it is equal to n+sod(n) for n = 1165644986 and 1165645004.

It is not an unprimeable number, because it can be changed into a prime (1165645031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145705626 + ... + 145705633.

Almost surely, 2^1165645036 is an apocalyptic number.

It is an amenable number.

1165645036 is a deficient number, since it is larger than the sum of its proper divisors (874233784).

1165645036 is a wasteful number, since it uses less digits than its factorization.

1165645036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291411263 (or 291411261 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 1165645036 is about 34141.5441361401. The cubic root of 1165645036 is about 1052.4192247916.

The spelling of 1165645036 in words is "one billion, one hundred sixty-five million, six hundred forty-five thousand, thirty-six".