7860136385 has 8 divisors (see below), whose sum is σ = 9434952576. Its totient is φ = 6286249840.

The previous prime is 7860136381. The next prime is 7860136399. The reversal of 7860136385 is 5836310687.

It is a happy number.

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

It is not a de Polignac number, because 7860136385 - 2² = 7860136381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7860136381) 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, 213671 + ... + 247740.

It is an arithmetic number, because the mean of its divisors is an integer number (1179369072).

Almost surely, 2^7860136385 is an apocalyptic number.

It is an amenable number.

7860136385 is a deficient number, since it is larger than the sum of its proper divisors (1574816191).

7860136385 is a wasteful number, since it uses less digits than its factorization.

7860136385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464823.

The product of its (nonzero) digits is 725760, while the sum is 47.

The square root of 7860136385 is about 88657.4102091867. The cubic root of 7860136385 is about 1988.2761082178.

The spelling of 7860136385 in words is "seven billion, eight hundred sixty million, one hundred thirty-six thousand, three hundred eighty-five".