2890158961 has 4 divisors (see below), whose sum is σ = 2890266624. Its totient is φ = 2890051300.

The previous prime is 2890158959. The next prime is 2890158977. The reversal of 2890158961 is 1698510982.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2890158961 - 2¹ = 2890158959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2890158991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22776 + ... + 79366.

It is an arithmetic number, because the mean of its divisors is an integer number (722566656).

Almost surely, 2^2890158961 is an apocalyptic number.

It is an amenable number.

2890158961 is a deficient number, since it is larger than the sum of its proper divisors (107663).

2890158961 is an equidigital number, since it uses as much as digits as its factorization.

2890158961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107662.

The product of its (nonzero) digits is 311040, while the sum is 49.

The square root of 2890158961 is about 53760.1986696478. The cubic root of 2890158961 is about 1424.4282447805.

The spelling of 2890158961 in words is "two billion, eight hundred ninety million, one hundred fifty-eight thousand, nine hundred sixty-one".