7138265408 has 28 divisors (see below), whose sum is σ = 14183418420. Its totient is φ = 3564490752.

The previous prime is 7138265377. The next prime is 7138265417. The reversal of 7138265408 is 8045628317.

It can be written as a sum of positive squares in 2 ways, for example, as 445716544 + 6692548864 = 21112^2 + 81808^2 .

It is a congruent number.

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, 22673 + ... + 121616.

Almost surely, 2^7138265408 is an apocalyptic number.

It is an amenable number.

7138265408 is a deficient number, since it is larger than the sum of its proper divisors (7045153012).

7138265408 is a wasteful number, since it uses less digits than its factorization.

7138265408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145074 (or 145064 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 7138265408 is about 84488.2560359722. The cubic root of 7138265408 is about 1925.4440226535. Note that the first 3 decimals are identical.

The spelling of 7138265408 in words is "seven billion, one hundred thirty-eight million, two hundred sixty-five thousand, four hundred eight".