1630963538 has 16 divisors (see below), whose sum is σ = 2536004160. Its totient is φ = 785744400.

The previous prime is 1630963531. The next prime is 1630963573. The reversal of 1630963538 is 8353690361.

It is not an unprimeable number, because it can be changed into a prime (1630963531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158 + ... + 57113.

It is an arithmetic number, because the mean of its divisors is an integer number (158500260).

Almost surely, 2^1630963538 is an apocalyptic number.

1630963538 is a deficient number, since it is larger than the sum of its proper divisors (905040622).

1630963538 is a wasteful number, since it uses less digits than its factorization.

1630963538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57793.

The product of its (nonzero) digits is 349920, while the sum is 44.

The square root of 1630963538 is about 40385.1895872732. The cubic root of 1630963538 is about 1177.1037700494.

The spelling of 1630963538 in words is "one billion, six hundred thirty million, nine hundred sixty-three thousand, five hundred thirty-eight".