2215019091 has 16 divisors (see below), whose sum is σ = 3016911744. Its totient is φ = 1445236224.

The previous prime is 2215019087. The next prime is 2215019173. The reversal of 2215019091 is 1909105122.

It is not a de Polignac number, because 2215019091 - 2² = 2215019087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2215019041) 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, 14926 + ... + 68211.

It is an arithmetic number, because the mean of its divisors is an integer number (188556984).

Almost surely, 2^2215019091 is an apocalyptic number.

2215019091 is a deficient number, since it is larger than the sum of its proper divisors (801892653).

2215019091 is a wasteful number, since it uses less digits than its factorization.

2215019091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83330.

The product of its (nonzero) digits is 1620, while the sum is 30.

The square root of 2215019091 is about 47063.9893230483. The cubic root of 2215019091 is about 1303.5443889487.

The spelling of 2215019091 in words is "two billion, two hundred fifteen million, nineteen thousand, ninety-one".