2015795997 has 16 divisors (see below), whose sum is σ = 2987772480. Its totient is φ = 1343230416.

The previous prime is 2015795993. The next prime is 2015796031. The reversal of 2015795997 is 7995975102.

It is not a de Polignac number, because 2015795997 - 2² = 2015795993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2015795993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44743 + ... + 77675.

It is an arithmetic number, because the mean of its divisors is an integer number (186735780).

Almost surely, 2^2015795997 is an apocalyptic number.

2015795997 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2015795997 is a deficient number, since it is larger than the sum of its proper divisors (971976483).

2015795997 is a wasteful number, since it uses less digits than its factorization.

2015795997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35209 (or 35203 counting only the distinct ones).

The product of its (nonzero) digits is 1786050, while the sum is 54.

The square root of 2015795997 is about 44897.6168298497. The cubic root of 2015795997 is about 1263.2293071049.

The spelling of 2015795997 in words is "two billion, fifteen million, seven hundred ninety-five thousand, nine hundred ninety-seven".