1992438692 has 18 divisors (see below), whose sum is σ = 3692553858. Its totient is φ = 937444992.

The previous prime is 1992438691. The next prime is 1992438719. The reversal of 1992438692 is 2968342991.

It can be written as a sum of positive squares in 3 ways, for example, as 112869376 + 1879569316 = 10624^2 + 43354^2 .

It is not an unprimeable number, because it can be changed into a prime (1992438691) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 365378 + ... + 370790.

It is an arithmetic number, because the mean of its divisors is an integer number (205141881).

Almost surely, 2^1992438692 is an apocalyptic number.

It is an amenable number.

1992438692 is a deficient number, since it is larger than the sum of its proper divisors (1700115166).

1992438692 is an frugal number, since it uses more digits than its factorization.

1992438692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10847 (or 5432 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 53.

The square root of 1992438692 is about 44636.7415029368. The cubic root of 1992438692 is about 1258.3312695530.

The spelling of 1992438692 in words is "one billion, nine hundred ninety-two million, four hundred thirty-eight thousand, six hundred ninety-two".