2800138893 has 4 divisors (see below), whose sum is σ = 3733518528. Its totient is φ = 1866759260.

The previous prime is 2800138853. The next prime is 2800138903. The reversal of 2800138893 is 3988310082.

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 2800138893 - 2²⁴ = 2783361677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2800138853) 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, 466689813 + ... + 466689818.

It is an arithmetic number, because the mean of its divisors is an integer number (933379632).

Almost surely, 2^2800138893 is an apocalyptic number.

It is an amenable number.

2800138893 is a deficient number, since it is larger than the sum of its proper divisors (933379635).

2800138893 is an equidigital number, since it uses as much as digits as its factorization.

2800138893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933379634.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 2800138893 is about 52916.3386205055. The cubic root of 2800138893 is about 1409.4830512768.

The spelling of 2800138893 in words is "two billion, eight hundred million, one hundred thirty-eight thousand, eight hundred ninety-three".