1912220244 has 192 divisors, whose sum is σ = 5638348800. Its totient is φ = 555206400.

The previous prime is 1912220237. The next prime is 1912220281. The reversal of 1912220244 is 4420222191.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5045247 + ... + 5045625.

It is an arithmetic number, because the mean of its divisors is an integer number (29366400).

Almost surely, 2^1912220244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1912220244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2819174400).

1912220244 is an abundant number, since it is smaller than the sum of its proper divisors (3726128556).

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

1912220244 is a wasteful number, since it uses less digits than its factorization.

1912220244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571 (or 563 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1912220244 is about 43728.9405771510. The cubic root of 1912220244 is about 1241.2120138794.

The spelling of 1912220244 in words is "one billion, nine hundred twelve million, two hundred twenty thousand, two hundred forty-four".