2638795742 has 16 divisors (see below), whose sum is σ = 4341892464. Its totient is φ = 1192824000.

The previous prime is 2638795741. The next prime is 2638795763. The reversal of 2638795742 is 2475978362.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2638795741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327359 + ... + 335322.

It is an arithmetic number, because the mean of its divisors is an integer number (271368279).

Almost surely, 2^2638795742 is an apocalyptic number.

2638795742 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2638795742 is a deficient number, since it is larger than the sum of its proper divisors (1703096722).

2638795742 is a wasteful number, since it uses less digits than its factorization.

2638795742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662875.

The product of its digits is 5080320, while the sum is 53.

The square root of 2638795742 is about 51369.2100581662. The cubic root of 2638795742 is about 1381.8744642307.

The spelling of 2638795742 in words is "two billion, six hundred thirty-eight million, seven hundred ninety-five thousand, seven hundred forty-two".