1897955 has 8 divisors (see below), whose sum is σ = 2292192. Its totient is φ = 1508608.

The previous prime is 1897949. The next prime is 1897957. The reversal of 1897955 is 5597981.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1897955 - 2⁴ = 1897939 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1897957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302 + ... + 1971.

It is an arithmetic number, because the mean of its divisors is an integer number (286524).

2^1897955 is an apocalyptic number.

1897955 is a deficient number, since it is larger than the sum of its proper divisors (394237).

1897955 is a wasteful number, since it uses less digits than its factorization.

1897955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2445.

The product of its digits is 113400, while the sum is 44.

The square root of 1897955 is about 1377.6628760332. The cubic root of 1897955 is about 123.8117808713.

The spelling of 1897955 in words is "one million, eight hundred ninety-seven thousand, nine hundred fifty-five".