1630573723 has 4 divisors (see below), whose sum is σ = 1630783440. Its totient is φ = 1630364008.

The previous prime is 1630573709. The next prime is 1630573733. The reversal of 1630573723 is 3273750361.

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 1630573723 - 2⁹ = 1630573211 is a prime.

It is a super-2 number, since 2×1630573723² = 5317541332276161458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1630573733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92728 + ... + 108901.

It is an arithmetic number, because the mean of its divisors is an integer number (407695860).

Almost surely, 2^1630573723 is an apocalyptic number.

1630573723 is a deficient number, since it is larger than the sum of its proper divisors (209717).

1630573723 is an equidigital number, since it uses as much as digits as its factorization.

1630573723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209716.

The product of its (nonzero) digits is 79380, while the sum is 37.

The square root of 1630573723 is about 40380.3630865301. The cubic root of 1630573723 is about 1177.0099831034.

The spelling of 1630573723 in words is "one billion, six hundred thirty million, five hundred seventy-three thousand, seven hundred twenty-three".