1886401 has 4 divisors (see below), whose sum is σ = 2057904. Its totient is φ = 1714900.

The previous prime is 1886389. The next prime is 1886411. The reversal of 1886401 is 1046881.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1886401 - 2¹¹ = 1884353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1886401.

It is not an unprimeable number, because it can be changed into a prime (1886411) 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, 85735 + ... + 85756.

It is an arithmetic number, because the mean of its divisors is an integer number (514476).

2^1886401 is an apocalyptic number.

1886401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1886401 is a deficient number, since it is larger than the sum of its proper divisors (171503).

1886401 is a wasteful number, since it uses less digits than its factorization.

1886401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171502.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 1886401 is about 1373.4631411145. The cubic root of 1886401 is about 123.5600302608.

The spelling of 1886401 in words is "one million, eight hundred eighty-six thousand, four hundred one".