1897973 has 12 divisors (see below), whose sum is σ = 2381472. Its totient is φ = 1469520.

The previous prime is 1897969. The next prime is 1897979. The reversal of 1897973 is 3797981.

It is not a de Polignac number, because 1897973 - 2² = 1897969 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1897979) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12011 + ... + 12167.

It is an arithmetic number, because the mean of its divisors is an integer number (198456).

2^1897973 is an apocalyptic number.

It is an amenable number.

1897973 is a deficient number, since it is larger than the sum of its proper divisors (483499).

1897973 is an equidigital number, since it uses as much as digits as its factorization.

1897973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332 (or 175 counting only the distinct ones).

The product of its digits is 95256, while the sum is 44.

The square root of 1897973 is about 1377.6694088206. The cubic root of 1897973 is about 123.8121722759.

The spelling of 1897973 in words is "one million, eight hundred ninety-seven thousand, nine hundred seventy-three".