1156147019 has 2 divisors, whose sum is σ = 1156147020. Its totient is φ = 1156147018.

The previous prime is 1156147001. The next prime is 1156147021. The reversal of 1156147019 is 9107416511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1156147019 - 2²⁰ = 1155098443 is a prime.

It is a super-2 number, since 2×1156147019² = 2673351859085172722, which contains 22 as substring.

Together with 1156147021, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1156147019.

It is not a weakly prime, because it can be changed into another prime (1156147319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578073509 + 578073510.

It is an arithmetic number, because the mean of its divisors is an integer number (578073510).

Almost surely, 2^1156147019 is an apocalyptic number.

1156147019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1156147019 is an equidigital number, since it uses as much as digits as its factorization.

1156147019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 35.

The square root of 1156147019 is about 34002.1619753803. The cubic root of 1156147019 is about 1049.5529522469.

The spelling of 1156147019 in words is "one billion, one hundred fifty-six million, one hundred forty-seven thousand, nineteen".