2659493938 has 4 divisors (see below), whose sum is σ = 3989240910. Its totient is φ = 1329746968.

The previous prime is 2659493929. The next prime is 2659493953. The reversal of 2659493938 is 8393949562.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1732474129 + 927019809 = 41623^2 + 30447^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664873483 + ... + 664873486.

Almost surely, 2^2659493938 is an apocalyptic number.

2659493938 is a deficient number, since it is larger than the sum of its proper divisors (1329746972).

2659493938 is a wasteful number, since it uses less digits than its factorization.

2659493938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329746971.

The product of its digits is 12597120, while the sum is 58.

The square root of 2659493938 is about 51570.2815388863. The cubic root of 2659493938 is about 1385.4781092079.

The spelling of 2659493938 in words is "two billion, six hundred fifty-nine million, four hundred ninety-three thousand, nine hundred thirty-eight".