2120913591 has 8 divisors (see below), whose sum is σ = 2994231024. Its totient is φ = 1330769280.

The previous prime is 2120913583. The next prime is 2120913617. The reversal of 2120913591 is 1953190212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2120913591 - 2³ = 2120913583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120913581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20793220 + ... + 20793321.

It is an arithmetic number, because the mean of its divisors is an integer number (374278878).

Almost surely, 2^2120913591 is an apocalyptic number.

2120913591 is a deficient number, since it is larger than the sum of its proper divisors (873317433).

2120913591 is a wasteful number, since it uses less digits than its factorization.

2120913591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41586561.

The product of its (nonzero) digits is 4860, while the sum is 33.

The square root of 2120913591 is about 46053.3776285736. The cubic root of 2120913591 is about 1284.8161639033.

The spelling of 2120913591 in words is "two billion, one hundred twenty million, nine hundred thirteen thousand, five hundred ninety-one".