1864481 has 4 divisors (see below), whose sum is σ = 1874964. Its totient is φ = 1854000.

The previous prime is 1864469. The next prime is 1864483. The reversal of 1864481 is 1844681.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 846400 + 1018081 = 920^2 + 1009^2 .

It is a cyclic number.

It is not a de Polignac number, because 1864481 - 2⁶ = 1864417 is a prime.

It is a super-2 number, since 2×1864481² = 6952578798722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1864483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4970 + ... + 5331.

It is an arithmetic number, because the mean of its divisors is an integer number (468741).

2^1864481 is an apocalyptic number.

It is an amenable number.

1864481 is a deficient number, since it is larger than the sum of its proper divisors (10483).

1864481 is a wasteful number, since it uses less digits than its factorization.

1864481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10482.

The product of its digits is 6144, while the sum is 32.

The square root of 1864481 is about 1365.4599957523. The cubic root of 1864481 is about 123.0795748327.

The spelling of 1864481 in words is "one million, eight hundred sixty-four thousand, four hundred eighty-one".