1890413 has 4 divisors (see below), whose sum is σ = 2160480. Its totient is φ = 1620348.

The previous prime is 1890403. The next prime is 1890467. The reversal of 1890413 is 3140981.

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 1890413 - 2⁴ = 1890397 is a prime.

It is a super-2 number, since 2×1890413² = 7147322621138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1890403) 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, 135023 + ... + 135036.

It is an arithmetic number, because the mean of its divisors is an integer number (540120).

2^1890413 is an apocalyptic number.

It is an amenable number.

1890413 is a deficient number, since it is larger than the sum of its proper divisors (270067).

1890413 is an equidigital number, since it uses as much as digits as its factorization.

1890413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270066.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1890413 is about 1374.9229069297. The cubic root of 1890413 is about 123.6475641099.

The spelling of 1890413 in words is "one million, eight hundred ninety thousand, four hundred thirteen".