1597793820 has 48 divisors (see below), whose sum is σ = 5112941568. Its totient is φ = 365209920.

The previous prime is 1597793789. The next prime is 1597793833. The reversal of 1597793820 is 283977951.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1901716 + ... + 1902555.

It is an arithmetic number, because the mean of its divisors is an integer number (106519616).

Almost surely, 2^1597793820 is an apocalyptic number.

1597793820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1597793820 is an abundant number, since it is smaller than the sum of its proper divisors (3515147748).

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

1597793820 is a wasteful number, since it uses less digits than its factorization.

1597793820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3804290 (or 3804288 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 51.

The square root of 1597793820 is about 39972.4132371314. The cubic root of 1597793820 is about 1169.0692722269.

The spelling of 1597793820 in words is "one billion, five hundred ninety-seven million, seven hundred ninety-three thousand, eight hundred twenty".