1864904 has 8 divisors (see below), whose sum is σ = 3496710. Its totient is φ = 932448.

The previous prime is 1864901. The next prime is 1864921. The reversal of 1864904 is 4094681.

It can be written as a sum of positive squares in only one way, i.e., 1612900 + 252004 = 1270^2 + 502^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1864901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116549 + ... + 116564.

2^1864904 is an apocalyptic number.

It is an amenable number.

1864904 is a deficient number, since it is larger than the sum of its proper divisors (1631806).

1864904 is a wasteful number, since it uses less digits than its factorization.

1864904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233119 (or 233115 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1864904 is about 1365.6148798252. The cubic root of 1864904 is about 123.0888819309.

The spelling of 1864904 in words is "one million, eight hundred sixty-four thousand, nine hundred four".