2015197881 has 8 divisors (see below), whose sum is σ = 2749417440. Its totient is φ = 1312221792.

The previous prime is 2015197861. The next prime is 2015197913. The reversal of 2015197881 is 1887915102.

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

It is not a de Polignac number, because 2015197881 - 2²⁵ = 1981643449 is a prime.

It is a super-2 number, since 2×2015197881² = 8122044999173780322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2015197861) 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, 7810716 + ... + 7810973.

It is an arithmetic number, because the mean of its divisors is an integer number (343677180).

Almost surely, 2^2015197881 is an apocalyptic number.

It is an amenable number.

2015197881 is a deficient number, since it is larger than the sum of its proper divisors (734219559).

2015197881 is a wasteful number, since it uses less digits than its factorization.

2015197881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15621735.

The product of its (nonzero) digits is 40320, while the sum is 42.

The square root of 2015197881 is about 44890.9554476177. The cubic root of 2015197881 is about 1263.1043552411.

The spelling of 2015197881 in words is "two billion, fifteen million, one hundred ninety-seven thousand, eight hundred eighty-one".