1147985513893 has 2 divisors, whose sum is σ = 1147985513894. Its totient is φ = 1147985513892.

The previous prime is 1147985513837. The next prime is 1147985513957. The reversal of 1147985513893 is 3983155897411.

It is an a-pointer prime, because the next prime (1147985513957) can be obtained adding 1147985513893 to its sum of digits (64).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1122038103169 + 25947410724 = 1059263^2 + 161082^2 .

It is a cyclic number.

It is not a de Polignac number, because 1147985513893 - 2³⁷ = 1010546560421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1147985513803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 573992756946 + 573992756947.

It is an arithmetic number, because the mean of its divisors is an integer number (573992756947).

Almost surely, 2^{1147985513893} is an apocalyptic number.

It is an amenable number.

1147985513893 is a deficient number, since it is larger than the sum of its proper divisors (1).

1147985513893 is an equidigital number, since it uses as much as digits as its factorization.

1147985513893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32659200, while the sum is 64.

The spelling of 1147985513893 in words is "one trillion, one hundred forty-seven billion, nine hundred eighty-five million, five hundred thirteen thousand, eight hundred ninety-three".