1631122642 has 8 divisors (see below), whose sum is σ = 2446920432. Its totient is φ = 815482500.

The previous prime is 1631122601. The next prime is 1631122679. The reversal of 1631122642 is 2462211361.

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

It is a super-2 number, since 2×1631122642² = 5321122146490120328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1631122642.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8784 + ... + 57787.

It is an arithmetic number, because the mean of its divisors is an integer number (305865054).

Almost surely, 2^1631122642 is an apocalyptic number.

1631122642 is a deficient number, since it is larger than the sum of its proper divisors (815797790).

1631122642 is a wasteful number, since it uses less digits than its factorization.

1631122642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78824.

The product of its digits is 3456, while the sum is 28.

The square root of 1631122642 is about 40387.1593702751. The cubic root of 1631122642 is about 1177.1420451394.

The spelling of 1631122642 in words is "one billion, six hundred thirty-one million, one hundred twenty-two thousand, six hundred forty-two".