2090970991 has 8 divisors (see below), whose sum is σ = 2103722640. Its totient is φ = 2078258688.

The previous prime is 2090970977. The next prime is 2090970997. The reversal of 2090970991 is 1990790902.

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

It is a cyclic number.

It is not a de Polignac number, because 2090970991 - 2¹³ = 2090962799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2090970997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100495 + ... + 119503.

It is an arithmetic number, because the mean of its divisors is an integer number (262965330).

Almost surely, 2^2090970991 is an apocalyptic number.

2090970991 is a deficient number, since it is larger than the sum of its proper divisors (12751649).

2090970991 is a wasteful number, since it uses less digits than its factorization.

2090970991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19673.

The product of its (nonzero) digits is 91854, while the sum is 46.

The square root of 2090970991 is about 45727.1362650232. The cubic root of 2090970991 is about 1278.7412330193.

The spelling of 2090970991 in words is "two billion, ninety million, nine hundred seventy thousand, nine hundred ninety-one".