7745289538 has 16 divisors (see below), whose sum is σ = 13334630400. Its totient is φ = 3305162016.

The previous prime is 7745289533. The next prime is 7745289553. The reversal of 7745289538 is 8359825477.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (7745289533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1183938 + ... + 1190461.

It is an arithmetic number, because the mean of its divisors is an integer number (833414400).

Almost surely, 2^7745289538 is an apocalyptic number.

7745289538 is a deficient number, since it is larger than the sum of its proper divisors (5589340862).

7745289538 is a wasteful number, since it uses less digits than its factorization.

7745289538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2374641.

The product of its digits is 16934400, while the sum is 58.

The square root of 7745289538 is about 88007.3266154586. The cubic root of 7745289538 is about 1978.5447881416.

The spelling of 7745289538 in words is "seven billion, seven hundred forty-five million, two hundred eighty-nine thousand, five hundred thirty-eight".