2261319558 has 16 divisors (see below), whose sum is σ = 4523110896. Its totient is φ = 753694560.

The previous prime is 2261319553. The next prime is 2261319563. The reversal of 2261319558 is 8559131622.

It is an interprime number because it is at equal distance from previous prime (2261319553) and next prime (2261319563).

It is a super-2 number, since 2×2261319558² = 10227132286786630728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2261319553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88068 + ... + 110808.

It is an arithmetic number, because the mean of its divisors is an integer number (282694431).

Almost surely, 2^2261319558 is an apocalyptic number.

2261319558 is an abundant number, since it is smaller than the sum of its proper divisors (2261791338).

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

2261319558 is a wasteful number, since it uses less digits than its factorization.

2261319558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39319.

The product of its digits is 129600, while the sum is 42.

The square root of 2261319558 is about 47553.3338263470. Note that the first 3 decimals coincide. The cubic root of 2261319558 is about 1312.5644766874.

The spelling of 2261319558 in words is "two billion, two hundred sixty-one million, three hundred nineteen thousand, five hundred fifty-eight".