1895220900 has 108 divisors (see below), whose sum is σ = 6085472484. Its totient is φ = 493056000.

The previous prime is 1895220889. The next prime is 1895220917. The reversal of 1895220900 is 90225981.

1895220900 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 823575204 + 1071645696 = 28698^2 + 32736^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 11220 + ... + 62580.

Almost surely, 2^1895220900 is an apocalyptic number.

1895220900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1895220900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3042736242).

1895220900 is an abundant number, since it is smaller than the sum of its proper divisors (4190251584).

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

1895220900 is a wasteful number, since it uses less digits than its factorization.

1895220900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51422 (or 51412 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 1895220900 is about 43534.1348828709. The cubic root of 1895220900 is about 1237.5229992665.

The spelling of 1895220900 in words is "one billion, eight hundred ninety-five million, two hundred twenty thousand, nine hundred".