7381872615 has 32 divisors (see below), whose sum is σ = 12935139840. Its totient is φ = 3572551296.

The previous prime is 7381872611. The next prime is 7381872637. The reversal of 7381872615 is 5162781837.

It is a happy number.

It is not a de Polignac number, because 7381872615 - 2² = 7381872611 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7381872611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 309307 + ... + 332316.

It is an arithmetic number, because the mean of its divisors is an integer number (404223120).

Almost surely, 2^7381872615 is an apocalyptic number.

7381872615 is a deficient number, since it is larger than the sum of its proper divisors (5553267225).

7381872615 is a wasteful number, since it uses less digits than its factorization.

7381872615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641703.

The product of its digits is 564480, while the sum is 48.

The square root of 7381872615 is about 85917.8247804261. The cubic root of 7381872615 is about 1947.1026544683.

The spelling of 7381872615 in words is "seven billion, three hundred eighty-one million, eight hundred seventy-two thousand, six hundred fifteen".