1992047808 has 56 divisors (see below), whose sum is σ = 5334170688. Its totient is φ = 656010496.

The previous prime is 1992047803. The next prime is 1992047851. The reversal of 1992047808 is 8087402991.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1992047803) 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, 46566 + ... + 78437.

It is an arithmetic number, because the mean of its divisors is an integer number (95253048).

Almost surely, 2^1992047808 is an apocalyptic number.

It is an amenable number.

1992047808 is an abundant number, since it is smaller than the sum of its proper divisors (3342122880).

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

1992047808 is a wasteful number, since it uses less digits than its factorization.

1992047808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125101 (or 125091 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 1992047808 is about 44632.3627875558. The cubic root of 1992047808 is about 1258.2489761420.

The spelling of 1992047808 in words is "one billion, nine hundred ninety-two million, forty-seven thousand, eight hundred eight".