6438495740 has 12 divisors (see below), whose sum is σ = 13520841096. Its totient is φ = 2575398288.

The previous prime is 6438495733. The next prime is 6438495751. The reversal of 6438495740 is 475948346.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

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, 160962374 + ... + 160962413.

It is an arithmetic number, because the mean of its divisors is an integer number (1126736758).

Almost surely, 2^6438495740 is an apocalyptic number.

It is an amenable number.

6438495740 is an abundant number, since it is smaller than the sum of its proper divisors (7082345356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6438495740 is a wasteful number, since it uses less digits than its factorization.

6438495740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321924796 (or 321924794 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 50.

The square root of 6438495740 is about 80240.2376616620. The cubic root of 6438495740 is about 1860.3506237685.

The spelling of 6438495740 in words is "six billion, four hundred thirty-eight million, four hundred ninety-five thousand, seven hundred forty".