385387134499 has 2 divisors, whose sum is σ = 385387134500. Its totient is φ = 385387134498.

The previous prime is 385387134491. The next prime is 385387134541. The reversal of 385387134499 is 994431783583.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 385387134499 - 2³ = 385387134491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 385387134499.

It is not a weakly prime, because it can be changed into another prime (385387134491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192693567249 + 192693567250.

It is an arithmetic number, because the mean of its divisors is an integer number (192693567250).

Almost surely, 2^385387134499 is an apocalyptic number.

385387134499 is a deficient number, since it is larger than the sum of its proper divisors (1).

385387134499 is an equidigital number, since it uses as much as digits as its factorization.

385387134499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78382080, while the sum is 64.

The spelling of 385387134499 in words is "three hundred eighty-five billion, three hundred eighty-seven million, one hundred thirty-four thousand, four hundred ninety-nine".