1898345 has 8 divisors (see below), whose sum is σ = 2287176. Its totient is φ = 1512576.

The previous prime is 1898317. The next prime is 1898353. The reversal of 1898345 is 5438981.

It can be written as a sum of positive squares in 4 ways, for example, as 190096 + 1708249 = 436^2 + 1307^2 .

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 1898345 - 2¹⁴ = 1881961 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1898299 and 1898308.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 959 + ... + 2171.

It is an arithmetic number, because the mean of its divisors is an integer number (285897).

2^1898345 is an apocalyptic number.

It is an amenable number.

1898345 is a deficient number, since it is larger than the sum of its proper divisors (388831).

1898345 is a wasteful number, since it uses less digits than its factorization.

1898345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531.

The product of its digits is 34560, while the sum is 38.

The square root of 1898345 is about 1377.8044128250. The cubic root of 1898345 is about 123.8202607505.

The spelling of 1898345 in words is "one million, eight hundred ninety-eight thousand, three hundred forty-five".