1905413 has 4 divisors (see below), whose sum is σ = 1933920. Its totient is φ = 1876908.

The previous prime is 1905391. The next prime is 1905433. The reversal of 1905413 is 3145091.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 1905413 - 2⁸ = 1905157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1905433) 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, 14153 + ... + 14286.

It is an arithmetic number, because the mean of its divisors is an integer number (483480).

2^1905413 is an apocalyptic number.

It is an amenable number.

1905413 is a deficient number, since it is larger than the sum of its proper divisors (28507).

1905413 is an equidigital number, since it uses as much as digits as its factorization.

1905413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28506.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1905413 is about 1380.3669801904. The cubic root of 1905413 is about 123.9737414048.

The spelling of 1905413 in words is "one million, nine hundred five thousand, four hundred thirteen".