2265403938 has 16 divisors (see below), whose sum is σ = 5178066240. Its totient is φ = 647258256.

The previous prime is 2265403913. The next prime is 2265403949. The reversal of 2265403938 is 8393045622.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 53938189 = 2265403938 / (2 + 2 + 6 + 5 + 4 + 0 + 3 + 9 + 3 + 8).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2265403938.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26969053 + ... + 26969136.

It is an arithmetic number, because the mean of its divisors is an integer number (323629140).

Almost surely, 2^2265403938 is an apocalyptic number.

2265403938 is an abundant number, since it is smaller than the sum of its proper divisors (2912662302).

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

2265403938 is a wasteful number, since it uses less digits than its factorization.

2265403938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53938201.

The product of its (nonzero) digits is 311040, while the sum is 42.

The square root of 2265403938 is about 47596.2597059895. The cubic root of 2265403938 is about 1313.3542497263.

The spelling of 2265403938 in words is "two billion, two hundred sixty-five million, four hundred three thousand, nine hundred thirty-eight".