1913780088 has 64 divisors (see below), whose sum is σ = 5799340800. Its totient is φ = 579932640.

The previous prime is 1913780069. The next prime is 1913780101. The reversal of 1913780088 is 8800873191.

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, 400356 + ... + 405107.

It is an arithmetic number, because the mean of its divisors is an integer number (90614700).

Almost surely, 2^1913780088 is an apocalyptic number.

1913780088 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1913780088 is an abundant number, since it is smaller than the sum of its proper divisors (3885560712).

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

1913780088 is a wasteful number, since it uses less digits than its factorization.

1913780088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805489 (or 805479 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 45.

The square root of 1913780088 is about 43746.7723152234. The cubic root of 1913780088 is about 1241.5494176411.

It can be divided in two parts, 19137 and 80088, that added together give a square (99225 = 315²).

The spelling of 1913780088 in words is "one billion, nine hundred thirteen million, seven hundred eighty thousand, eighty-eight".