2215742291 has 8 divisors (see below), whose sum is σ = 2586155520. Its totient is φ = 1858798728.

The previous prime is 2215742281. The next prime is 2215742297. The reversal of 2215742291 is 1922475122.

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

It is a cyclic number.

It is not a de Polignac number, because 2215742291 - 2²⁶ = 2148633427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2215742297) 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, 3367061 + ... + 3367718.

It is an arithmetic number, because the mean of its divisors is an integer number (323269440).

Almost surely, 2^2215742291 is an apocalyptic number.

2215742291 is a deficient number, since it is larger than the sum of its proper divisors (370413229).

2215742291 is an equidigital number, since it uses as much as digits as its factorization.

2215742291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6734833.

The product of its digits is 20160, while the sum is 35.

The square root of 2215742291 is about 47071.6718526122. The cubic root of 2215742291 is about 1303.6862418603.

The spelling of 2215742291 in words is "two billion, two hundred fifteen million, seven hundred forty-two thousand, two hundred ninety-one".