1161630636 has 48 divisors (see below), whose sum is σ = 2801369088. Its totient is φ = 374256000.

The previous prime is 1161630629. The next prime is 1161630643. The reversal of 1161630636 is 6360361611.

It is an interprime number because it is at equal distance from previous prime (1161630629) and next prime (1161630643).

It is a junction number, because it is equal to n+sod(n) for n = 1161630597 and 1161630606.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 426816 + ... + 429528.

It is an arithmetic number, because the mean of its divisors is an integer number (58361856).

Almost surely, 2^1161630636 is an apocalyptic number.

It is an amenable number.

1161630636 is an abundant number, since it is smaller than the sum of its proper divisors (1639738452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1161630636 is a wasteful number, since it uses less digits than its factorization.

1161630636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3902 (or 3900 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 1161630636 is about 34082.7028857748. The cubic root of 1161630636 is about 1051.2096824596.

The spelling of 1161630636 in words is "one billion, one hundred sixty-one million, six hundred thirty thousand, six hundred thirty-six".