915250990 has 16 divisors (see below), whose sum is σ = 1656080640. Its totient is φ = 364182880.

The previous prime is 915250967. The next prime is 915250993. The reversal of 915250990 is 99052519.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (915250993) 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, 237685 + ... + 241504.

It is an arithmetic number, because the mean of its divisors is an integer number (103505040).

Almost surely, 2^915250990 is an apocalyptic number.

915250990 is a deficient number, since it is larger than the sum of its proper divisors (740829650).

915250990 is a wasteful number, since it uses less digits than its factorization.

915250990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479387.

The product of its (nonzero) digits is 36450, while the sum is 40.

The square root of 915250990 is about 30253.1153767674. The cubic root of 915250990 is about 970.9124478293.

The spelling of 915250990 in words is "nine hundred fifteen million, two hundred fifty thousand, nine hundred ninety".