1541389 has 2 divisors, whose sum is σ = 1541390. Its totient is φ = 1541388.

The previous prime is 1541381. The next prime is 1541429. The reversal of 1541389 is 9831451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1085764 + 455625 = 1042^2 + 675^2 .

It is a cyclic number.

It is not a de Polignac number, because 1541389 - 2³ = 1541381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1541389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1541381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770694 + 770695.

It is an arithmetic number, because the mean of its divisors is an integer number (770695).

2^1541389 is an apocalyptic number.

It is an amenable number.

1541389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1541389 is an equidigital number, since it uses as much as digits as its factorization.

1541389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 31.

The square root of 1541389 is about 1241.5268825120. The cubic root of 1541389 is about 115.5147435937.

The spelling of 1541389 in words is "one million, five hundred forty-one thousand, three hundred eighty-nine".