1630515263 has 4 divisors (see below), whose sum is σ = 1755939528. Its totient is φ = 1505091000.

The previous prime is 1630515247. The next prime is 1630515269. The reversal of 1630515263 is 3625150361.

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 1630515263 - 2⁴ = 1630515247 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 (1630515269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62712113 + ... + 62712138.

It is an arithmetic number, because the mean of its divisors is an integer number (438984882).

Almost surely, 2^1630515263 is an apocalyptic number.

1630515263 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1630515263 is a deficient number, since it is larger than the sum of its proper divisors (125424265).

1630515263 is a wasteful number, since it uses less digits than its factorization.

1630515263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125424264.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 1630515263 is about 40379.6392133461. The cubic root of 1630515263 is about 1176.9959167199.

The spelling of 1630515263 in words is "one billion, six hundred thirty million, five hundred fifteen thousand, two hundred sixty-three".