7738256845 has 8 divisors (see below), whose sum is σ = 10130081760. Its totient is φ = 5627823120.

The previous prime is 7738256839. The next prime is 7738256917. The reversal of 7738256845 is 5486528377.

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

It is not a de Polignac number, because 7738256845 - 2⁷ = 7738256717 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (55), and also a Moran number because the ratio is a prime number: 140695579 = 7738256845 / (7 + 7 + 3 + 8 + 2 + 5 + 6 + 8 + 4 + 5).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70347735 + ... + 70347844.

It is an arithmetic number, because the mean of its divisors is an integer number (1266260220).

Almost surely, 2^7738256845 is an apocalyptic number.

It is an amenable number.

7738256845 is a deficient number, since it is larger than the sum of its proper divisors (2391824915).

7738256845 is a wasteful number, since it uses less digits than its factorization.

7738256845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140695595.

The product of its digits is 11289600, while the sum is 55.

The square root of 7738256845 is about 87967.3623851483. The cubic root of 7738256845 is about 1977.9457697930.

The spelling of 7738256845 in words is "seven billion, seven hundred thirty-eight million, two hundred fifty-six thousand, eight hundred forty-five".