1630641142 has 64 divisors (see below), whose sum is σ = 2874191040. Its totient is φ = 687398400.

The previous prime is 1630641119. The next prime is 1630641149. The reversal of 1630641142 is 2411460361.

It is a self number, because there is not a number n which added to its sum of digits gives 1630641142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630641149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1596592 + ... + 1597612.

It is an arithmetic number, because the mean of its divisors is an integer number (44909235).

Almost surely, 2^1630641142 is an apocalyptic number.

1630641142 is a deficient number, since it is larger than the sum of its proper divisors (1243549898).

1630641142 is a wasteful number, since it uses less digits than its factorization.

1630641142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169.

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

The square root of 1630641142 is about 40381.1978772299. The cubic root of 1630641142 is about 1177.0262047440.

The spelling of 1630641142 in words is "one billion, six hundred thirty million, six hundred forty-one thousand, one hundred forty-two".