1890223608 has 256 divisors, whose sum is σ = 6289920000. Its totient is φ = 468744192.

The previous prime is 1890223583. The next prime is 1890223619. The reversal of 1890223608 is 8063220981.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 1818753 + ... + 1819791.

It is an arithmetic number, because the mean of its divisors is an integer number (24570000).

Almost surely, 2^1890223608 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 1890223608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3144960000).

1890223608 is an abundant number, since it is smaller than the sum of its proper divisors (4399696392).

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

1890223608 is a wasteful number, since it uses less digits than its factorization.

1890223608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099 (or 1081 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 1890223608 is about 43476.7018988331. The cubic root of 1890223608 is about 1236.4343474041.

The spelling of 1890223608 in words is "one billion, eight hundred ninety million, two hundred twenty-three thousand, six hundred eight".