2890891357 has 4 divisors (see below), whose sum is σ = 2892195196. Its totient is φ = 2889587520.

The previous prime is 2890891343. The next prime is 2890891373. The reversal of 2890891357 is 7531980982.

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 1478710116 + 1412181241 = 38454^2 + 37579^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2890891357 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 (2890891337) 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, 648588 + ... + 653029.

It is an arithmetic number, because the mean of its divisors is an integer number (723048799).

Almost surely, 2^2890891357 is an apocalyptic number.

It is an amenable number.

2890891357 is a deficient number, since it is larger than the sum of its proper divisors (1303839).

2890891357 is a wasteful number, since it uses less digits than its factorization.

2890891357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303838.

The product of its (nonzero) digits is 1088640, while the sum is 52.

The square root of 2890891357 is about 53767.0099317416. The cubic root of 2890891357 is about 1424.5485562065.

The spelling of 2890891357 in words is "two billion, eight hundred ninety million, eight hundred ninety-one thousand, three hundred fifty-seven".