1630869842 has 24 divisors (see below), whose sum is σ = 2863853964. Its totient is φ = 694485792.

The previous prime is 1630869841. The next prime is 1630869887. The reversal of 1630869842 is 2489680361.

It can be written as a sum of positive squares in 2 ways, for example, as 1579188121 + 51681721 = 39739^2 + 7189^2 .

It is not an unprimeable number, because it can be changed into a prime (1630869841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37613 + ... + 68384.

Almost surely, 2^1630869842 is an apocalyptic number.

1630869842 is a deficient number, since it is larger than the sum of its proper divisors (1232984122).

1630869842 is a wasteful number, since it uses less digits than its factorization.

1630869842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106170 (or 106163 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 47.

The square root of 1630869842 is about 40384.0295413917. The cubic root of 1630869842 is about 1177.0812287674.

The spelling of 1630869842 in words is "one billion, six hundred thirty million, eight hundred sixty-nine thousand, eight hundred forty-two".