1319442469 has 2 divisors, whose sum is σ = 1319442470. Its totient is φ = 1319442468.

The previous prime is 1319442431. The next prime is 1319442499. The reversal of 1319442469 is 9642449131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1127952225 + 191490244 = 33585^2 + 13838^2 .

It is a cyclic number.

It is not a de Polignac number, because 1319442469 - 2¹⁵ = 1319409701 is a prime.

It is a super-2 number, since 2×1319442469² = 3481856858001631922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1319442409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659721234 + 659721235.

It is an arithmetic number, because the mean of its divisors is an integer number (659721235).

Almost surely, 2^1319442469 is an apocalyptic number.

It is an amenable number.

1319442469 is a deficient number, since it is larger than the sum of its proper divisors (1).

1319442469 is an equidigital number, since it uses as much as digits as its factorization.

1319442469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 43.

The square root of 1319442469 is about 36324.1306709466. The cubic root of 1319442469 is about 1096.8068468343.

The spelling of 1319442469 in words is "one billion, three hundred nineteen million, four hundred forty-two thousand, four hundred sixty-nine".