2665038538 has 8 divisors (see below), whose sum is σ = 4072983588. Its totient is φ = 1307377344.

The previous prime is 2665038529. The next prime is 2665038547. The reversal of 2665038538 is 8358305662.

2665038538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2665038529) and next prime (2665038547).

It can be written as a sum of positive squares in 2 ways, for example, as 2153238409 + 511800129 = 46403^2 + 22623^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12570831 + ... + 12571042.

Almost surely, 2^2665038538 is an apocalyptic number.

2665038538 is a deficient number, since it is larger than the sum of its proper divisors (1407945050).

2665038538 is a wasteful number, since it uses less digits than its factorization.

2665038538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25141928.

The product of its (nonzero) digits is 1036800, while the sum is 46.

The square root of 2665038538 is about 51624.0112544541. The cubic root of 2665038538 is about 1386.4402709036.

The spelling of 2665038538 in words is "two billion, six hundred sixty-five million, thirty-eight thousand, five hundred thirty-eight".