2890311869 has 4 divisors (see below), whose sum is σ = 2968428444. Its totient is φ = 2812195296.

The previous prime is 2890311839. The next prime is 2890311881. The reversal of 2890311869 is 9681130982.

2890311869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2245812100 + 644499769 = 47390^2 + 25387^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2890311869 is a prime.

It is a super-2 number, since 2×2890311869² = 16707805400164546322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2890311829) 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, 39058232 + ... + 39058305.

It is an arithmetic number, because the mean of its divisors is an integer number (742107111).

Almost surely, 2^2890311869 is an apocalyptic number.

It is an amenable number.

2890311869 is a deficient number, since it is larger than the sum of its proper divisors (78116575).

2890311869 is an equidigital number, since it uses as much as digits as its factorization.

2890311869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78116574.

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 2890311869 is about 53761.6207809995. The cubic root of 2890311869 is about 1424.4533648098.

The spelling of 2890311869 in words is "two billion, eight hundred ninety million, three hundred eleven thousand, eight hundred sixty-nine".