2890891356 has 12 divisors (see below), whose sum is σ = 6745413192. Its totient is φ = 963630448.

The previous prime is 2890891343. The next prime is 2890891373. The reversal of 2890891356 is 6531980982.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 2890891299 and 2890891308.

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, 120453795 + ... + 120453818.

It is an arithmetic number, because the mean of its divisors is an integer number (562117766).

Almost surely, 2^2890891356 is an apocalyptic number.

It is an amenable number.

2890891356 is an abundant number, since it is smaller than the sum of its proper divisors (3854521836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2890891356 is a wasteful number, since it uses less digits than its factorization.

2890891356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240907620 (or 240907618 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 51.

The square root of 2890891356 is about 53767.0099224422. The cubic root of 2890891356 is about 1424.5485560423.

The spelling of 2890891356 in words is "two billion, eight hundred ninety million, eight hundred ninety-one thousand, three hundred fifty-six".