1897944 has 32 divisors (see below), whose sum is σ = 4899840. Its totient is φ = 612000.

The previous prime is 1897943. The next prime is 1897949. The reversal of 1897944 is 4497981.

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 1897896 and 1897905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1897943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 532 + ... + 2019.

It is an arithmetic number, because the mean of its divisors is an integer number (153120).

2^1897944 is an apocalyptic number.

It is an amenable number.

1897944 is an abundant number, since it is smaller than the sum of its proper divisors (3001896).

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

1897944 is a wasteful number, since it uses less digits than its factorization.

1897944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2591 (or 2587 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The square root of 1897944 is about 1377.6588837590. The cubic root of 1897944 is about 123.8115416784.

The spelling of 1897944 in words is "one million, eight hundred ninety-seven thousand, nine hundred forty-four".