1154844486997 has 2 divisors, whose sum is σ = 1154844486998. Its totient is φ = 1154844486996.

The previous prime is 1154844486947. The next prime is 1154844487037. The reversal of 1154844486997 is 7996844484511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 635696857636 + 519147629361 = 797306^2 + 720519^2 .

It is a cyclic number.

It is not a de Polignac number, because 1154844486997 - 2²³ = 1154836098389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1154844486937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577422243498 + 577422243499.

It is an arithmetic number, because the mean of its divisors is an integer number (577422243499).

Almost surely, 2^{1154844486997} is an apocalyptic number.

It is an amenable number.

1154844486997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1154844486997 is an equidigital number, since it uses as much as digits as its factorization.

1154844486997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 278691840, while the sum is 70.

The spelling of 1154844486997 in words is "one trillion, one hundred fifty-four billion, eight hundred forty-four million, four hundred eighty-six thousand, nine hundred ninety-seven".