2890538381 has 4 divisors (see below), whose sum is σ = 3042672000. Its totient is φ = 2738404764.

The previous prime is 2890538369. The next prime is 2890538423. The reversal of 2890538381 is 1838350982.

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.

It is a cyclic number.

It is not a de Polignac number, because 2890538381 - 2²⁶ = 2823429517 is a prime.

It is a super-2 number, since 2×2890538381² = 16710424264068202322, 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 (2890538281) 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, 76066781 + ... + 76066818.

It is an arithmetic number, because the mean of its divisors is an integer number (760668000).

Almost surely, 2^2890538381 is an apocalyptic number.

It is an amenable number.

2890538381 is a deficient number, since it is larger than the sum of its proper divisors (152133619).

2890538381 is a wasteful number, since it uses less digits than its factorization.

2890538381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152133618.

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 2890538381 is about 53763.7273726441. The cubic root of 2890538381 is about 1424.4905750218.

The spelling of 2890538381 in words is "two billion, eight hundred ninety million, five hundred thirty-eight thousand, three hundred eighty-one".