1992689031 has 8 divisors (see below), whose sum is σ = 2657236464. Its totient is φ = 1328300480.

The previous prime is 1992689003. The next prime is 1992689063. The reversal of 1992689031 is 1309862991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1992689031 - 2⁶ = 1992688967 is a prime.

It is a super-2 number, since 2×1992689031² = 7941619148535437922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1992689431) 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, 6480 + ... + 63461.

It is an arithmetic number, because the mean of its divisors is an integer number (332154558).

Almost surely, 2^1992689031 is an apocalyptic number.

1992689031 is a deficient number, since it is larger than the sum of its proper divisors (664547433).

1992689031 is an equidigital number, since it uses as much as digits as its factorization.

1992689031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79441.

The product of its (nonzero) digits is 209952, while the sum is 48.

The square root of 1992689031 is about 44639.5455958055. The cubic root of 1992689031 is about 1258.3839681548.

The spelling of 1992689031 in words is "one billion, nine hundred ninety-two million, six hundred eighty-nine thousand, thirty-one".