1989631614 has 16 divisors (see below), whose sum is σ = 3981200400. Its totient is φ = 662887680.

The previous prime is 1989631613. The next prime is 1989631639. The reversal of 1989631614 is 4161369891.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1989631613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67189 + ... + 92160.

It is an arithmetic number, because the mean of its divisors is an integer number (248825025).

Almost surely, 2^1989631614 is an apocalyptic number.

1989631614 is an abundant number, since it is smaller than the sum of its proper divisors (1991568786).

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

1989631614 is a wasteful number, since it uses less digits than its factorization.

1989631614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161435.

The product of its digits is 279936, while the sum is 48.

The square root of 1989631614 is about 44605.2868391181. The cubic root of 1989631614 is about 1257.7400520078.

The spelling of 1989631614 in words is "one billion, nine hundred eighty-nine million, six hundred thirty-one thousand, six hundred fourteen".