1156187752649 has 2 divisors, whose sum is σ = 1156187752650. Its totient is φ = 1156187752648.

The previous prime is 1156187752613. The next prime is 1156187752661. The reversal of 1156187752649 is 9462577816511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 852732199225 + 303455553424 = 923435^2 + 550868^2 .

It is a cyclic number.

It is not a de Polignac number, because 1156187752649 - 2³² = 1151892785353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1156187752591 and 1156187752600.

It is not a weakly prime, because it can be changed into another prime (1156187752669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578093876324 + 578093876325.

It is an arithmetic number, because the mean of its divisors is an integer number (578093876325).

Almost surely, 2^{1156187752649} is an apocalyptic number.

It is an amenable number.

1156187752649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1156187752649 is an equidigital number, since it uses as much as digits as its factorization.

1156187752649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25401600, while the sum is 62.

The spelling of 1156187752649 in words is "one trillion, one hundred fifty-six billion, one hundred eighty-seven million, seven hundred fifty-two thousand, six hundred forty-nine".