1319149069 has 4 divisors (see below), whose sum is σ = 1507598944. Its totient is φ = 1130699196.

The previous prime is 1319149063. The next prime is 1319149087. The reversal of 1319149069 is 9609419131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9609419131 = 13 ⋅739186087.

It is a cyclic number.

It is not a de Polignac number, because 1319149069 - 2⁵ = 1319149037 is a prime.

It is a super-2 number, since 2×1319149069² = 3480308532487133522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1319149063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94224927 + ... + 94224940.

It is an arithmetic number, because the mean of its divisors is an integer number (376899736).

Almost surely, 2^1319149069 is an apocalyptic number.

It is an amenable number.

1319149069 is a deficient number, since it is larger than the sum of its proper divisors (188449875).

1319149069 is an equidigital number, since it uses as much as digits as its factorization.

1319149069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188449874.

The product of its (nonzero) digits is 52488, while the sum is 43.

The square root of 1319149069 is about 36320.0918088047. The cubic root of 1319149069 is about 1096.7255430533.

The spelling of 1319149069 in words is "one billion, three hundred nineteen million, one hundred forty-nine thousand, sixty-nine".