2659987942 has 16 divisors (see below), whose sum is σ = 4107885120. Its totient is φ = 1290869568.

The previous prime is 2659987921. The next prime is 2659987951. The reversal of 2659987942 is 2497899562.

2659987942 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13678 + ... + 74209.

It is an arithmetic number, because the mean of its divisors is an integer number (256742820).

Almost surely, 2^2659987942 is an apocalyptic number.

2659987942 is a deficient number, since it is larger than the sum of its proper divisors (1447897178).

2659987942 is a wasteful number, since it uses less digits than its factorization.

2659987942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88335.

The product of its digits is 19595520, while the sum is 61.

The square root of 2659987942 is about 51575.0709354820. The cubic root of 2659987942 is about 1385.5638886043.

The spelling of 2659987942 in words is "two billion, six hundred fifty-nine million, nine hundred eighty-seven thousand, nine hundred forty-two".