1156864452019 has 4 divisors (see below), whose sum is σ = 1181478589344. Its totient is φ = 1132250314696.

The previous prime is 1156864452013. The next prime is 1156864452077. The reversal of 1156864452019 is 9102544686511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1156864452019 - 2⁵ = 1156864451987 is a prime.

It is a super-2 number, since 2×1156864452019² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1156864452013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12307068592 + ... + 12307068685.

It is an arithmetic number, because the mean of its divisors is an integer number (295369647336).

Almost surely, 2^{1156864452019} is an apocalyptic number.

1156864452019 is a deficient number, since it is larger than the sum of its proper divisors (24614137325).

1156864452019 is an equidigital number, since it uses as much as digits as its factorization.

1156864452019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24614137324.

The product of its (nonzero) digits is 2073600, while the sum is 52.

The spelling of 1156864452019 in words is "one trillion, one hundred fifty-six billion, eight hundred sixty-four million, four hundred fifty-two thousand, nineteen".