1992764646 has 32 divisors (see below), whose sum is σ = 4478133600. Its totient is φ = 656789760.

The previous prime is 1992764629. The next prime is 1992764677. The reversal of 1992764646 is 6464672991.

It is a happy number.

It is a super-2 number, since 2×1992764646² = 7942221868695010632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 1992764592 and 1992764601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202515 + ... + 212126.

It is an arithmetic number, because the mean of its divisors is an integer number (139941675).

Almost surely, 2^1992764646 is an apocalyptic number.

1992764646 is an abundant number, since it is smaller than the sum of its proper divisors (2485368954).

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

1992764646 is a wasteful number, since it uses less digits than its factorization.

1992764646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414741 (or 414735 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The square root of 1992764646 is about 44640.3925385967. The cubic root of 1992764646 is about 1258.3998849217.

The spelling of 1992764646 in words is "one billion, nine hundred ninety-two million, seven hundred sixty-four thousand, six hundred forty-six".