1898425 has 6 divisors (see below), whose sum is σ = 2354078. Its totient is φ = 1518720.

The previous prime is 1898419. The next prime is 1898431. The reversal of 1898425 is 5248981.

It is an interprime number because it is at equal distance from previous prime (1898419) and next prime (1898431).

It can be written as a sum of positive squares in 3 ways, for example, as 226576 + 1671849 = 476^2 + 1293^2 .

It is not a de Polignac number, because 1898425 - 2³ = 1898417 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37944 + ... + 37993.

2^1898425 is an apocalyptic number.

It is an amenable number.

1898425 is a deficient number, since it is larger than the sum of its proper divisors (455653).

1898425 is an equidigital number, since it uses as much as digits as its factorization.

1898425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75947 (or 75942 counting only the distinct ones).

The product of its digits is 23040, while the sum is 37.

The square root of 1898425 is about 1377.8334442160. The cubic root of 1898425 is about 123.8220000694.

The spelling of 1898425 in words is "one million, eight hundred ninety-eight thousand, four hundred twenty-five".