1898164 has 6 divisors (see below), whose sum is σ = 3321794. Its totient is φ = 949080.

The previous prime is 1898153. The next prime is 1898179. The reversal of 1898164 is 4618981.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1102500 + 795664 = 1050^2 + 892^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237267 + ... + 237274.

2^1898164 is an apocalyptic number.

It is an amenable number.

1898164 is a deficient number, since it is larger than the sum of its proper divisors (1423630).

1898164 is a wasteful number, since it uses less digits than its factorization.

1898164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474545 (or 474543 counting only the distinct ones).

The product of its digits is 13824, while the sum is 37.

The square root of 1898164 is about 1377.7387270452. The cubic root of 1898164 is about 123.8163253613.

The spelling of 1898164 in words is "one million, eight hundred ninety-eight thousand, one hundred sixty-four".