1630477663 has 4 divisors (see below), whose sum is σ = 1645715880. Its totient is φ = 1615239448.

The previous prime is 1630477649. The next prime is 1630477691. The reversal of 1630477663 is 3667740361.

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 1630477663 - 2⁹ = 1630477151 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 (1630471663) 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, 7618948 + ... + 7619161.

It is an arithmetic number, because the mean of its divisors is an integer number (411428970).

Almost surely, 2^1630477663 is an apocalyptic number.

1630477663 is a deficient number, since it is larger than the sum of its proper divisors (15238217).

1630477663 is a wasteful number, since it uses less digits than its factorization.

1630477663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15238216.

The product of its (nonzero) digits is 381024, while the sum is 43.

The square root of 1630477663 is about 40379.1736294838. The cubic root of 1630477663 is about 1176.9868693986.

The spelling of 1630477663 in words is "one billion, six hundred thirty million, four hundred seventy-seven thousand, six hundred sixty-three".