385647391193 has 2 divisors, whose sum is σ = 385647391194. Its totient is φ = 385647391192.

The previous prime is 385647391189. The next prime is 385647391201. The reversal of 385647391193 is 391193746583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 279007916944 + 106639474249 = 528212^2 + 326557^2 .

It is a cyclic number.

It is not a de Polignac number, because 385647391193 - 2² = 385647391189 is a prime.

It is not a weakly prime, because it can be changed into another prime (385647397193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192823695596 + 192823695597.

It is an arithmetic number, because the mean of its divisors is an integer number (192823695597).

Almost surely, 2^385647391193 is an apocalyptic number.

It is an amenable number.

385647391193 is a deficient number, since it is larger than the sum of its proper divisors (1).

385647391193 is an equidigital number, since it uses as much as digits as its factorization.

385647391193 is an evil number, because the sum of its binary digits is even.

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

The spelling of 385647391193 in words is "three hundred eighty-five billion, six hundred forty-seven million, three hundred ninety-one thousand, one hundred ninety-three".