1791820164 has 48 divisors (see below), whose sum is σ = 4313404928. Its totient is φ = 578492928.

The previous prime is 1791820157. The next prime is 1791820183. The reversal of 1791820164 is 4610281971.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89964 + ... + 108060.

Almost surely, 2^1791820164 is an apocalyptic number.

It is an amenable number.

1791820164 is an abundant number, since it is smaller than the sum of its proper divisors (2521584764).

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

1791820164 is a wasteful number, since it uses less digits than its factorization.

1791820164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18364 (or 18362 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 1791820164 is about 42329.8968106467. The cubic root of 1791820164 is about 1214.5949558423.

The spelling of 1791820164 in words is "one billion, seven hundred ninety-one million, eight hundred twenty thousand, one hundred sixty-four".