1315423919 has 2 divisors, whose sum is σ = 1315423920. Its totient is φ = 1315423918.

The previous prime is 1315423891. The next prime is 1315424009. The reversal of 1315423919 is 9193245131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1315423919 - 2¹² = 1315419823 is a prime.

It is a super-2 number, since 2×1315423919² = 3460680173354637122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1315426919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657711959 + 657711960.

It is an arithmetic number, because the mean of its divisors is an integer number (657711960).

Almost surely, 2^1315423919 is an apocalyptic number.

1315423919 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315423919 is an equidigital number, since it uses as much as digits as its factorization.

1315423919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 38.

The square root of 1315423919 is about 36268.7733318898. The cubic root of 1315423919 is about 1095.6922206506.

It can be divided in two parts, 13154 and 23919, that added together give a palindrome (37073).

The spelling of 1315423919 in words is "one billion, three hundred fifteen million, four hundred twenty-three thousand, nine hundred nineteen".