1831642772 has 12 divisors (see below), whose sum is σ = 3206819616. Its totient is φ = 915408600.

The previous prime is 1831642759. The next prime is 1831642817. The reversal of 1831642772 is 2772461381.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93104 + ... + 111047.

It is an arithmetic number, because the mean of its divisors is an integer number (267234968).

Almost surely, 2^1831642772 is an apocalyptic number.

It is an amenable number.

1831642772 is a deficient number, since it is larger than the sum of its proper divisors (1375176844).

1831642772 is a wasteful number, since it uses less digits than its factorization.

1831642772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206398 (or 206396 counting only the distinct ones).

The product of its digits is 112896, while the sum is 41.

The square root of 1831642772 is about 42797.6958725584. The cubic root of 1831642772 is about 1223.5270975978.

The spelling of 1831642772 in words is "one billion, eight hundred thirty-one million, six hundred forty-two thousand, seven hundred seventy-two".