915139641 has 16 divisors (see below), whose sum is σ = 1314593280. Its totient is φ = 562928640.

The previous prime is 915139627. The next prime is 915139651. The reversal of 915139641 is 146931519.

It is not a de Polignac number, because 915139641 - 2⁵ = 915139609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 915139641.

It is not an unprimeable number, because it can be changed into a prime (915139651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164536 + ... + 170006.

It is an arithmetic number, because the mean of its divisors is an integer number (82162080).

Almost surely, 2^915139641 is an apocalyptic number.

It is an amenable number.

915139641 is a deficient number, since it is larger than the sum of its proper divisors (399453639).

915139641 is a wasteful number, since it uses less digits than its factorization.

915139641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9776.

The product of its digits is 29160, while the sum is 39.

The square root of 915139641 is about 30251.2750309801. The cubic root of 915139641 is about 970.8730726503.

The spelling of 915139641 in words is "nine hundred fifteen million, one hundred thirty-nine thousand, six hundred forty-one".