1255327819 has 2 divisors, whose sum is σ = 1255327820. Its totient is φ = 1255327818.

The previous prime is 1255327807. The next prime is 1255327907. The reversal of 1255327819 is 9187235521.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (9187235521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1255327819 - 2²⁵ = 1221773387 is a prime.

It is a super-2 number, since 2×1255327819² = 3151695866310593522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1255327519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627663909 + 627663910.

It is an arithmetic number, because the mean of its divisors is an integer number (627663910).

Almost surely, 2^1255327819 is an apocalyptic number.

1255327819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255327819 is an equidigital number, since it uses as much as digits as its factorization.

1255327819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 43.

The square root of 1255327819 is about 35430.6056820936. The cubic root of 1255327819 is about 1078.7456341588.

The spelling of 1255327819 in words is "one billion, two hundred fifty-five million, three hundred twenty-seven thousand, eight hundred nineteen".