1374127549 has 2 divisors, whose sum is σ = 1374127550. Its totient is φ = 1374127548.

The previous prime is 1374127543. The next prime is 1374127567. The reversal of 1374127549 is 9457214731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 976125049 + 398002500 = 31243^2 + 19950^2 .

It is a cyclic number.

It is not a de Polignac number, because 1374127549 - 2¹⁵ = 1374094781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1374127543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687063774 + 687063775.

It is an arithmetic number, because the mean of its divisors is an integer number (687063775).

Almost surely, 2^1374127549 is an apocalyptic number.

It is an amenable number.

1374127549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1374127549 is an equidigital number, since it uses as much as digits as its factorization.

1374127549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 43.

The square root of 1374127549 is about 37069.2264418884. The cubic root of 1374127549 is about 1111.7548059899.

The spelling of 1374127549 in words is "one billion, three hundred seventy-four million, one hundred twenty-seven thousand, five hundred forty-nine".