1897050000 has 120 divisors (see below), whose sum is σ = 6125982912. Its totient is φ = 505840000.

The previous prime is 1897049981. The next prime is 1897050007. The reversal of 1897050000 is 507981.

It is a tau number, because it is divible by the number of its divisors (120).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 1897050000.

It is not an unprimeable number, because it can be changed into a prime (1897050007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143677 + ... + 156323.

Almost surely, 2^1897050000 is an apocalyptic number.

1897050000 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 1897050000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3062991456).

1897050000 is an abundant number, since it is smaller than the sum of its proper divisors (4228932912).

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

1897050000 is an equidigital number, since it uses as much as digits as its factorization.

1897050000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12683 (or 12657 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 1897050000 is about 43555.1374696487. The cubic root of 1897050000 is about 1237.9209872643.

Adding to 1897050000 its reverse (507981), we get a palindrome (1897557981).

The spelling of 1897050000 in words is "one billion, eight hundred ninety-seven million, fifty thousand".