2931225918 has 16 divisors (see below), whose sum is σ = 6207302160. Its totient is φ = 919600256.

The previous prime is 2931225889. The next prime is 2931225919. The reversal of 2931225918 is 8195221392.

It is a self number, because there is not a number n which added to its sum of digits gives 2931225918.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2931225919) 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, 14368653 + ... + 14368856.

It is an arithmetic number, because the mean of its divisors is an integer number (387956385).

Almost surely, 2^2931225918 is an apocalyptic number.

2931225918 is an abundant number, since it is smaller than the sum of its proper divisors (3276076242).

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

2931225918 is a wasteful number, since it uses less digits than its factorization.

2931225918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28737531.

The product of its digits is 77760, while the sum is 42.

The square root of 2931225918 is about 54140.7971681245. The cubic root of 2931225918 is about 1431.1432196660.

The spelling of 2931225918 in words is "two billion, nine hundred thirty-one million, two hundred twenty-five thousand, nine hundred eighteen".