1992614661 has 20 divisors (see below), whose sum is σ = 2991604000. Its totient is φ = 1321723656.

The previous prime is 1992614627. The next prime is 1992614677. The reversal of 1992614661 is 1664162991.

It is a happy number.

It is not a de Polignac number, because 1992614661 - 2⁶ = 1992614597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1992615661) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 45691 + ... + 77928.

It is an arithmetic number, because the mean of its divisors is an integer number (149580200).

Almost surely, 2^1992614661 is an apocalyptic number.

It is an amenable number.

1992614661 is a deficient number, since it is larger than the sum of its proper divisors (998989339).

1992614661 is a wasteful number, since it uses less digits than its factorization.

1992614661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123830 (or 123821 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 1992614661 is about 44638.7125822419. The cubic root of 1992614661 is about 1258.3683130645.

The spelling of 1992614661 in words is "one billion, nine hundred ninety-two million, six hundred fourteen thousand, six hundred sixty-one".