1897038000 has 720 divisors, whose sum is σ = 7960094688. Its totient is φ = 418176000.

The previous prime is 1897037993. The next prime is 1897038023. The reversal of 1897038000 is 8307981.

It is a tau number, because it is divible by the number of its divisors (720).

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

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 28313967 + ... + 28314033.

Almost surely, 2^1897038000 is an apocalyptic number.

1897038000 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 1897038000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3980047344).

1897038000 is an abundant number, since it is smaller than the sum of its proper divisors (6063056688).

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

1897038000 is a wasteful number, since it uses less digits than its factorization.

1897038000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 1897038000 is about 43554.9997130065. Note that the first 3 decimals coincide. The cubic root of 1897038000 is about 1237.9183770566.

The spelling of 1897038000 in words is "one billion, eight hundred ninety-seven million, thirty-eight thousand".