2091757920 has 96 divisors (see below), whose sum is σ = 7530340608. Its totient is φ = 478115328.

The previous prime is 2091757901. The next prime is 2091757933. The reversal of 2091757920 is 297571902.

2091757920 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 307914 + ... + 314633.

It is an arithmetic number, because the mean of its divisors is an integer number (78441048).

Almost surely, 2^2091757920 is an apocalyptic number.

2091757920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2091757920 is an abundant number, since it is smaller than the sum of its proper divisors (5438582688).

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

2091757920 is a wasteful number, since it uses less digits than its factorization.

2091757920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622572 (or 622564 counting only the distinct ones).

The product of its (nonzero) digits is 79380, while the sum is 42.

The square root of 2091757920 is about 45735.7400727265. The cubic root of 2091757920 is about 1278.9016293701.

The spelling of 2091757920 in words is "two billion, ninety-one million, seven hundred fifty-seven thousand, nine hundred twenty".