1899485 has 12 divisors (see below), whose sum is σ = 2651868. Its totient is φ = 1302336.

The previous prime is 1899481. The next prime is 1899497. The reversal of 1899485 is 5849981.

It can be written as a sum of positive squares in 2 ways, for example, as 1466521 + 432964 = 1211^2 + 658^2 .

It is not a de Polignac number, because 1899485 - 2² = 1899481 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 (1899481) 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, 3632 + ... + 4121.

It is an arithmetic number, because the mean of its divisors is an integer number (220989).

2^1899485 is an apocalyptic number.

It is an amenable number.

1899485 is a deficient number, since it is larger than the sum of its proper divisors (752383).

1899485 is an equidigital number, since it uses as much as digits as its factorization.

1899485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7772 (or 7765 counting only the distinct ones).

The product of its digits is 103680, while the sum is 44.

The square root of 1899485 is about 1378.2180524141. The cubic root of 1899485 is about 123.8450414325.

The spelling of 1899485 in words is "one million, eight hundred ninety-nine thousand, four hundred eighty-five".