1992142820 has 24 divisors (see below), whose sum is σ = 4327759800. Its totient is φ = 769379072.

The previous prime is 1992142813. The next prime is 1992142871. The reversal of 1992142820 is 282412991.

It can be written as a sum of positive squares in 4 ways, for example, as 56670784 + 1935472036 = 7528^2 + 43994^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1716785 + ... + 1717944.

It is an arithmetic number, because the mean of its divisors is an integer number (180323325).

Almost surely, 2^1992142820 is an apocalyptic number.

1992142820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1992142820 is an abundant number, since it is smaller than the sum of its proper divisors (2335616980).

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

1992142820 is a wasteful number, since it uses less digits than its factorization.

1992142820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3434767 (or 3434765 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 1992142820 is about 44633.4271594732. The cubic root of 1992142820 is about 1258.2689801551.

The spelling of 1992142820 in words is "one billion, nine hundred ninety-two million, one hundred forty-two thousand, eight hundred twenty".