1630845797 has 32 divisors (see below), whose sum is σ = 1988634624. Its totient is φ = 1307275200.

The previous prime is 1630845793. The next prime is 1630845833. The reversal of 1630845797 is 7975480361.

It is not a de Polignac number, because 1630845797 - 2² = 1630845793 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 (1630845793) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2071838 + ... + 2072624.

It is an arithmetic number, because the mean of its divisors is an integer number (62144832).

Almost surely, 2^1630845797 is an apocalyptic number.

It is an amenable number.

1630845797 is a deficient number, since it is larger than the sum of its proper divisors (357788827).

1630845797 is a wasteful number, since it uses less digits than its factorization.

1630845797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The square root of 1630845797 is about 40383.7318359757. The cubic root of 1630845797 is about 1177.0754439082.

The spelling of 1630845797 in words is "one billion, six hundred thirty million, eight hundred forty-five thousand, seven hundred ninety-seven".