2091319723830 has 32 divisors (see below), whose sum is σ = 5030345916000. Its totient is φ = 556443195392.

The previous prime is 2091319723813. The next prime is 2091319723853. The reversal of 2091319723830 is 383279131902.

It is a self number, because there is not a number n which added to its sum of digits gives 2091319723830.

It is a congruent number.

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, 77615325 + ... + 77642264.

It is an arithmetic number, because the mean of its divisors is an integer number (157198309875).

Almost surely, 2^{2091319723830} is an apocalyptic number.

2091319723830 is an abundant number, since it is smaller than the sum of its proper divisors (2939026192170).

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

2091319723830 is a wasteful number, since it uses less digits than its factorization.

2091319723830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155258048.

The product of its (nonzero) digits is 489888, while the sum is 48.

The spelling of 2091319723830 in words is "two trillion, ninety-one billion, three hundred nineteen million, seven hundred twenty-three thousand, eight hundred thirty".