1897961344 has 32 divisors (see below), whose sum is σ = 3802264200. Its totient is φ = 943667712.

The previous prime is 1897961341. The next prime is 1897961353. The reversal of 1897961344 is 4431697981.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 1897961291 and 1897961300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1897961341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18507 + ... + 64330.

Almost surely, 2^1897961344 is an apocalyptic number.

It is an amenable number.

1897961344 is an abundant number, since it is smaller than the sum of its proper divisors (1904302856).

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

1897961344 is an equidigital number, since it uses as much as digits as its factorization.

1897961344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83030 (or 83018 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 52.

The square root of 1897961344 is about 43565.5981710340. The cubic root of 1897961344 is about 1238.1191881998.

The spelling of 1897961344 in words is "one billion, eight hundred ninety-seven million, nine hundred sixty-one thousand, three hundred forty-four".