1897047936 has 192 divisors, whose sum is σ = 6367452000. Its totient is φ = 541900800.

The previous prime is 1897047877. The next prime is 1897047941. The reversal of 1897047936 is 6397407981.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 392736 + ... + 397536.

Almost surely, 2^1897047936 is an apocalyptic number.

1897047936 is a gapful number since it is divisible by the number (16) 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 1897047936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3183726000).

1897047936 is an abundant number, since it is smaller than the sum of its proper divisors (4470404064).

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

1897047936 is an equidigital number, since it uses as much as digits as its factorization.

1897047936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4842 (or 4813 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The square root of 1897047936 is about 43555.1137755373. The cubic root of 1897047936 is about 1237.9205383093.

The spelling of 1897047936 in words is "one billion, eight hundred ninety-seven million, forty-seven thousand, nine hundred thirty-six".