2090901895 has 4 divisors (see below), whose sum is σ = 2509082280. Its totient is φ = 1672721512.

The previous prime is 2090901889. The next prime is 2090901913. The reversal of 2090901895 is 5981090902.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2090901895 - 2⁵ = 2090901863 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209090185 + ... + 209090194.

It is an arithmetic number, because the mean of its divisors is an integer number (627270570).

Almost surely, 2^2090901895 is an apocalyptic number.

2090901895 is a deficient number, since it is larger than the sum of its proper divisors (418180385).

2090901895 is an equidigital number, since it uses as much as digits as its factorization.

2090901895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418180384.

The product of its (nonzero) digits is 58320, while the sum is 43.

The square root of 2090901895 is about 45726.3807336640. The cubic root of 2090901895 is about 1278.7271475572.

The spelling of 2090901895 in words is "two billion, ninety million, nine hundred one thousand, eight hundred ninety-five".