7681827387 has 16 divisors (see below), whose sum is σ = 11036291840. Its totient is φ = 4724717472.

The previous prime is 7681827341. The next prime is 7681827389. The reversal of 7681827387 is 7837281867.

It is not a de Polignac number, because 7681827387 - 2¹⁴ = 7681811003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7681827389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20868 + ... + 125694.

It is an arithmetic number, because the mean of its divisors is an integer number (689768240).

Almost surely, 2^7681827387 is an apocalyptic number.

7681827387 is a deficient number, since it is larger than the sum of its proper divisors (3354464453).

7681827387 is a wasteful number, since it uses less digits than its factorization.

7681827387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106722.

The product of its digits is 6322176, while the sum is 57.

The square root of 7681827387 is about 87646.0346336330. The cubic root of 7681827387 is about 1973.1261305229.

The spelling of 7681827387 in words is "seven billion, six hundred eighty-one million, eight hundred twenty-seven thousand, three hundred eighty-seven".