2015393998 has 8 divisors (see below), whose sum is σ = 3154529808. Its totient is φ = 963884064.

The previous prime is 2015393987. The next prime is 2015394023. The reversal of 2015393998 is 8993935102.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21906411 + ... + 21906502.

It is an arithmetic number, because the mean of its divisors is an integer number (394316226).

Almost surely, 2^2015393998 is an apocalyptic number.

2015393998 is a deficient number, since it is larger than the sum of its proper divisors (1139135810).

2015393998 is a wasteful number, since it uses less digits than its factorization.

2015393998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43812938.

The product of its (nonzero) digits is 524880, while the sum is 49.

The square root of 2015393998 is about 44893.1397654475. The cubic root of 2015393998 is about 1263.1453285873.

The spelling of 2015393998 in words is "two billion, fifteen million, three hundred ninety-three thousand, nine hundred ninety-eight".