1538461 has 2 divisors, whose sum is σ = 1538462. Its totient is φ = 1538460.

The previous prime is 1538441. The next prime is 1538473. The reversal of 1538461 is 1648351.

1538461 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., 1452025 + 86436 = 1205^2 + 294^2 .

It is a cyclic number.

It is not a de Polignac number, because 1538461 - 2⁵ = 1538429 is a prime.

It is a Chen prime.

1538461 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1538441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 769230 + 769231.

It is an arithmetic number, because the mean of its divisors is an integer number (769231).

2^1538461 is an apocalyptic number.

It is an amenable number.

1538461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1538461 is an equidigital number, since it uses as much as digits as its factorization.

1538461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 28.

The square root of 1538461 is about 1240.3471288313. The cubic root of 1538461 is about 115.4415538582.

The spelling of 1538461 in words is "one million, five hundred thirty-eight thousand, four hundred sixty-one".