2251922004 has 18 divisors (see below), whose sum is σ = 5692358490. Its totient is φ = 750640656.

The previous prime is 2251921999. The next prime is 2251922011. The reversal of 2251922004 is 4002291522.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1267217604 + 984704400 = 35598^2 + 31380^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31276659 + ... + 31276730.

Almost surely, 2^2251922004 is an apocalyptic number.

It is an amenable number.

2251922004 is an abundant number, since it is smaller than the sum of its proper divisors (3440436486).

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

2251922004 is a wasteful number, since it uses less digits than its factorization.

2251922004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62553399 (or 62553394 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 2251922004 is about 47454.4202788318. The cubic root of 2251922004 is about 1310.7437076125.

The spelling of 2251922004 in words is "two billion, two hundred fifty-one million, nine hundred twenty-two thousand, four".