1897996800 has 480 divisors, whose sum is σ = 7501519872. Its totient is φ = 413614080.

The previous prime is 1897996781. The next prime is 1897996813. The reversal of 1897996800 is 86997981.

It is a tau number, because it is divible by the number of its divisors (480).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6182247 + ... + 6182553.

Almost surely, 2^1897996800 is an apocalyptic number.

1897996800 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 1897996800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3750759936).

1897996800 is an abundant number, since it is smaller than the sum of its proper divisors (5603523072).

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

1897996800 is a wasteful number, since it uses less digits than its factorization.

1897996800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 57.

The square root of 1897996800 is about 43566.0050957165. The cubic root of 1897996800 is about 1238.1268979600.

The spelling of 1897996800 in words is "one billion, eight hundred ninety-seven million, nine hundred ninety-six thousand, eight hundred".