1992157326 has 12 divisors (see below), whose sum is σ = 4316340912. Its totient is φ = 664052436.

The previous prime is 1992157319. The next prime is 1992157327. The reversal of 1992157326 is 6237512991.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1992157327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55337686 + ... + 55337721.

It is an arithmetic number, because the mean of its divisors is an integer number (359695076).

Almost surely, 2^1992157326 is an apocalyptic number.

1992157326 is an abundant number, since it is smaller than the sum of its proper divisors (2324183586).

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

1992157326 is a wasteful number, since it uses less digits than its factorization.

1992157326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110675415 (or 110675412 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 1992157326 is about 44633.5896607028. The cubic root of 1992157326 is about 1258.2720342208.

The spelling of 1992157326 in words is "one billion, nine hundred ninety-two million, one hundred fifty-seven thousand, three hundred twenty-six".