2142438894 has 24 divisors (see below), whose sum is σ = 4705542192. Its totient is φ = 704363040.

The previous prime is 2142438877. The next prime is 2142438913. The reversal of 2142438894 is 4988342412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 813922 + ... + 816549.

It is an arithmetic number, because the mean of its divisors is an integer number (196064258).

Almost surely, 2^2142438894 is an apocalyptic number.

2142438894 is an abundant number, since it is smaller than the sum of its proper divisors (2563103298).

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

2142438894 is a wasteful number, since it uses less digits than its factorization.

2142438894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630552 (or 1630549 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The square root of 2142438894 is about 46286.4871641822. The cubic root of 2142438894 is about 1289.1481052950.

The spelling of 2142438894 in words is "two billion, one hundred forty-two million, four hundred thirty-eight thousand, eight hundred ninety-four".