1156039437389 has 2 divisors, whose sum is σ = 1156039437390. Its totient is φ = 1156039437388.

The previous prime is 1156039437383. The next prime is 1156039437439. The reversal of 1156039437389 is 9837349306511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1143210024100 + 12829413289 = 1069210^2 + 113267^2 .

It is an emirp because it is prime and its reverse (9837349306511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1156039437389 - 2¹² = 1156039433293 is a prime.

It is a super-2 number, since 2×1156039437389² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1156039437383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578019718694 + 578019718695.

It is an arithmetic number, because the mean of its divisors is an integer number (578019718695).

Almost surely, 2^{1156039437389} is an apocalyptic number.

It is an amenable number.

1156039437389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1156039437389 is an equidigital number, since it uses as much as digits as its factorization.

1156039437389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14696640, while the sum is 59.

The spelling of 1156039437389 in words is "one trillion, one hundred fifty-six billion, thirty-nine million, four hundred thirty-seven thousand, three hundred eighty-nine".