1631022630 has 16 divisors (see below), whose sum is σ = 3914454384. Its totient is φ = 434939360.

The previous prime is 1631022593. The next prime is 1631022647. The reversal of 1631022630 is 362201361.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1631022630.

It is a congruent 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, 27183681 + ... + 27183740.

It is an arithmetic number, because the mean of its divisors is an integer number (244653399).

Almost surely, 2^1631022630 is an apocalyptic number.

1631022630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1631022630 is an abundant number, since it is smaller than the sum of its proper divisors (2283431754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1631022630 is a wasteful number, since it uses less digits than its factorization.

1631022630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54367431.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 1631022630 is about 40385.9211854824. The cubic root of 1631022630 is about 1177.1179858947.

Adding to 1631022630 its reverse (362201361), we get a palindrome (1993223991).

The spelling of 1631022630 in words is "one billion, six hundred thirty-one million, twenty-two thousand, six hundred thirty".