1630520995 has 8 divisors (see below), whose sum is σ = 2009507184. Its totient is φ = 1269162144.

The previous prime is 1630520977. The next prime is 1630521001. The reversal of 1630520995 is 5990250361.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1630520995 - 2⁷ = 1630520867 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4406629 + ... + 4406998.

It is an arithmetic number, because the mean of its divisors is an integer number (251188398).

Almost surely, 2^1630520995 is an apocalyptic number.

1630520995 is a deficient number, since it is larger than the sum of its proper divisors (378986189).

1630520995 is an equidigital number, since it uses as much as digits as its factorization.

1630520995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8813669.

The product of its (nonzero) digits is 72900, while the sum is 40.

The square root of 1630520995 is about 40379.7101896485. The cubic root of 1630520995 is about 1176.9972959430.

The spelling of 1630520995 in words is "one billion, six hundred thirty million, five hundred twenty thousand, nine hundred ninety-five".