385148737861 has 2 divisors, whose sum is σ = 385148737862. Its totient is φ = 385148737860.

The previous prime is 385148737817. The next prime is 385148737867. The reversal of 385148737861 is 168737841583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 350338507236 + 34810230625 = 591894^2 + 186575^2 .

It is an emirp because it is prime and its reverse (168737841583) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 385148737861 - 2⁷ = 385148737733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 385148737861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (385148737867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192574368930 + 192574368931.

It is an arithmetic number, because the mean of its divisors is an integer number (192574368931).

Almost surely, 2^385148737861 is an apocalyptic number.

It is an amenable number.

385148737861 is a deficient number, since it is larger than the sum of its proper divisors (1).

385148737861 is an equidigital number, since it uses as much as digits as its factorization.

385148737861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27095040, while the sum is 61.

The spelling of 385148737861 in words is "three hundred eighty-five billion, one hundred forty-eight million, seven hundred thirty-seven thousand, eight hundred sixty-one".