1630115663 has 4 divisors (see below), whose sum is σ = 1778308008. Its totient is φ = 1481923320.

The previous prime is 1630115657. The next prime is 1630115693. The reversal of 1630115663 is 3665110361.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1630115663 - 2⁸ = 1630115407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630115693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74096156 + ... + 74096177.

It is an arithmetic number, because the mean of its divisors is an integer number (444577002).

Almost surely, 2^1630115663 is an apocalyptic number.

1630115663 is a deficient number, since it is larger than the sum of its proper divisors (148192345).

1630115663 is a wasteful number, since it uses less digits than its factorization.

1630115663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148192344.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 1630115663 is about 40374.6908718816. The cubic root of 1630115663 is about 1176.8997577518.

The spelling of 1630115663 in words is "one billion, six hundred thirty million, one hundred fifteen thousand, six hundred sixty-three".