1831397396 has 12 divisors (see below), whose sum is σ = 3206223552. Its totient is φ = 915333528.

The previous prime is 1831397387. The next prime is 1831397401. The reversal of 1831397396 is 6937931381.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79850 + ... + 100193.

It is an arithmetic number, because the mean of its divisors is an integer number (267185296).

Almost surely, 2^1831397396 is an apocalyptic number.

It is an amenable number.

1831397396 is a deficient number, since it is larger than the sum of its proper divisors (1374826156).

1831397396 is a wasteful number, since it uses less digits than its factorization.

1831397396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182590 (or 182588 counting only the distinct ones).

The product of its digits is 734832, while the sum is 50.

The square root of 1831397396 is about 42794.8290801587. The cubic root of 1831397396 is about 1223.4724585606.

The spelling of 1831397396 in words is "one billion, eight hundred thirty-one million, three hundred ninety-seven thousand, three hundred ninety-six".