1149319819 has 2 divisors, whose sum is σ = 1149319820. Its totient is φ = 1149319818.

The previous prime is 1149319817. The next prime is 1149319837. The reversal of 1149319819 is 9189139411.

It is a weak prime.

It is an emirp because it is prime and its reverse (9189139411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1149319819 - 2¹ = 1149319817 is a prime.

It is a super-2 number, since 2×1149319819² = 2641872092692385522, which contains 22 as substring.

Together with 1149319817, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1149319817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574659909 + 574659910.

It is an arithmetic number, because the mean of its divisors is an integer number (574659910).

Almost surely, 2^1149319819 is an apocalyptic number.

1149319819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1149319819 is an equidigital number, since it uses as much as digits as its factorization.

1149319819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 46.

The square root of 1149319819 is about 33901.6197105684. The cubic root of 1149319819 is about 1047.4829563399.

It can be divided in two parts, 114931 and 9819, that added together give a triangular number (124750 = T₄₉₉).

The spelling of 1149319819 in words is "one billion, one hundred forty-nine million, three hundred nineteen thousand, eight hundred nineteen".