1898604 has 36 divisors (see below), whose sum is σ = 5010096. Its totient is φ = 605088.

The previous prime is 1898593. The next prime is 1898609. The reversal of 1898604 is 4068981.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1898609) 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, 319 + ... + 1974.

2^1898604 is an apocalyptic number.

It is an amenable number.

1898604 is an abundant number, since it is smaller than the sum of its proper divisors (3111492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1898604 is a wasteful number, since it uses less digits than its factorization.

1898604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2326 (or 2321 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 1898604 is about 1377.8983997378. The cubic root of 1898604 is about 123.8258916183.

The spelling of 1898604 in words is "one million, eight hundred ninety-eight thousand, six hundred four".