1864053 has 14 divisors (see below), whose sum is σ = 2795894. Its totient is φ = 1242216.

The previous prime is 1864043. The next prime is 1864069. The reversal of 1864053 is 3504681.

1864053 is a `hidden beast` number, since 18 + 640 + 5 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1542564 + 321489 = 1242^2 + 567^2 .

It is not a de Polignac number, because 1864053 - 2⁹ = 1863541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1864003) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 550 + ... + 2007.

2^1864053 is an apocalyptic number.

It is an amenable number.

1864053 is a deficient number, since it is larger than the sum of its proper divisors (931841).

1864053 is an frugal number, since it uses more digits than its factorization.

1864053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2575 (or 2560 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1864053 is about 1365.3032630152. The cubic root of 1864053 is about 123.0701562886.

The spelling of 1864053 in words is "one million, eight hundred sixty-four thousand, fifty-three".