2291418618 has 16 divisors (see below), whose sum is σ = 4584202176. Its totient is φ = 763578720.

The previous prime is 2291418617. The next prime is 2291418637. The reversal of 2291418618 is 8168141922.

It is a self number, because there is not a number n which added to its sum of digits gives 2291418618.

It is not an unprimeable number, because it can be changed into a prime (2291418617) 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, 34363 + ... + 75918.

It is an arithmetic number, because the mean of its divisors is an integer number (286512636).

Almost surely, 2^2291418618 is an apocalyptic number.

2291418618 is an abundant number, since it is smaller than the sum of its proper divisors (2292783558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2291418618 is a wasteful number, since it uses less digits than its factorization.

2291418618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113749.

The product of its digits is 55296, while the sum is 42.

The square root of 2291418618 is about 47868.7645338795. The cubic root of 2291418618 is about 1318.3624125514.

The spelling of 2291418618 in words is "two billion, two hundred ninety-one million, four hundred eighteen thousand, six hundred eighteen".