2725920018 has 96 divisors (see below), whose sum is σ = 6335550000. Its totient is φ = 845365248.

The previous prime is 2725920017. The next prime is 2725920031. The reversal of 2725920018 is 8100295272.

It can be written as a sum of positive squares in 8 ways, for example, as 1007237169 + 1718682849 = 31737^2 + 41457^2 .

It is not an unprimeable number, because it can be changed into a prime (2725920013) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2181858 + ... + 2183106.

Almost surely, 2^2725920018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2725920018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3167775000).

2725920018 is an abundant number, since it is smaller than the sum of its proper divisors (3609629982).

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

2725920018 is a wasteful number, since it uses less digits than its factorization.

2725920018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1436 (or 1433 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 2725920018 is about 52210.3439751167. The cubic root of 2725920018 is about 1396.9183950424.

The spelling of 2725920018 in words is "two billion, seven hundred twenty-five million, nine hundred twenty thousand, eighteen".