1995249815 has 8 divisors (see below), whose sum is σ = 2578476768. Its totient is φ = 1473415200.

The previous prime is 1995249803. The next prime is 1995249847. The reversal of 1995249815 is 5189425991.

It is a happy number.

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

It is not a de Polignac number, because 1995249815 - 2²² = 1991055511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15348011 + ... + 15348140.

It is an arithmetic number, because the mean of its divisors is an integer number (322309596).

Almost surely, 2^1995249815 is an apocalyptic number.

1995249815 is a deficient number, since it is larger than the sum of its proper divisors (583226953).

1995249815 is a wasteful number, since it uses less digits than its factorization.

1995249815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30696169.

The product of its digits is 1166400, while the sum is 53.

The square root of 1995249815 is about 44668.2192951544. The cubic root of 1995249815 is about 1258.9227828063.

The spelling of 1995249815 in words is "one billion, nine hundred ninety-five million, two hundred forty-nine thousand, eight hundred fifteen".