1538413 has 2 divisors, whose sum is σ = 1538414. Its totient is φ = 1538412.

The previous prime is 1538399. The next prime is 1538419. The reversal of 1538413 is 3148351.

1538413 is an esthetic number in base 5, because in such base its adjacent digits differ by 1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1447209 + 91204 = 1203^2 + 302^2 .

It is an emirp because it is prime and its reverse (3148351) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1538413 is a prime.

It is a super-3 number, since 3×1538413³ = 10922953332575432991, which contains 333 as substring.

1538413 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1538419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 769206 + 769207.

It is an arithmetic number, because the mean of its divisors is an integer number (769207).

2^1538413 is an apocalyptic number.

It is an amenable number.

1538413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1538413 is an equidigital number, since it uses as much as digits as its factorization.

1538413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 25.

The square root of 1538413 is about 1240.3277792584. The cubic root of 1538413 is about 115.4403532532.

The spelling of 1538413 in words is "one million, five hundred thirty-eight thousand, four hundred thirteen".