1630605136 has 10 divisors (see below), whose sum is σ = 3159297482. Its totient is φ = 815302560.

The previous prime is 1630605073. The next prime is 1630605139. The reversal of 1630605136 is 6315060361.

It can be written as a sum of positive squares in only one way, i.e., 1363086400 + 267518736 = 36920^2 + 16356^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1630605098 and 1630605107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630605139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50956395 + ... + 50956426.

Almost surely, 2^1630605136 is an apocalyptic number.

1630605136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1630605136 is a deficient number, since it is larger than the sum of its proper divisors (1528692346).

1630605136 is a wasteful number, since it uses less digits than its factorization.

1630605136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101912829 (or 101912823 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 1630605136 is about 40380.7520484698. The cubic root of 1630605136 is about 1177.0175414200.

Adding to 1630605136 its reverse (6315060361), we get a palindrome (7945665497).

The spelling of 1630605136 in words is "one billion, six hundred thirty million, six hundred five thousand, one hundred thirty-six".