1899164 has 12 divisors (see below), whose sum is σ = 3498600. Its totient is φ = 899568.

The previous prime is 1899137. The next prime is 1899167. The reversal of 1899164 is 4619981.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1899167) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 12419 + ... + 12570.

It is an arithmetic number, because the mean of its divisors is an integer number (291550).

2^1899164 is an apocalyptic number.

It is an amenable number.

1899164 is a deficient number, since it is larger than the sum of its proper divisors (1599436).

1899164 is a wasteful number, since it uses less digits than its factorization.

1899164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25012 (or 25010 counting only the distinct ones).

The product of its digits is 15552, while the sum is 38.

The square root of 1899164 is about 1378.1015927717. The cubic root of 1899164 is about 123.8380647172.

The spelling of 1899164 in words is "one million, eight hundred ninety-nine thousand, one hundred sixty-four".