1541091449 has 2 divisors, whose sum is σ = 1541091450. Its totient is φ = 1541091448.

The previous prime is 1541091443. The next prime is 1541091451. The reversal of 1541091449 is 9441901451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1527637225 + 13454224 = 39085^2 + 3668^2 .

It is an emirp because it is prime and its reverse (9441901451) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1541091449 is a prime.

Together with 1541091451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1541091443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770545724 + 770545725.

It is an arithmetic number, because the mean of its divisors is an integer number (770545725).

Almost surely, 2^1541091449 is an apocalyptic number.

It is an amenable number.

1541091449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1541091449 is an equidigital number, since it uses as much as digits as its factorization.

1541091449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 1541091449 is about 39256.7376255338. The cubic root of 1541091449 is about 1155.0731009498.

The spelling of 1541091449 in words is "one billion, five hundred forty-one million, ninety-one thousand, four hundred forty-nine".