385387019 has 2 divisors, whose sum is σ = 385387020. Its totient is φ = 385387018.

The previous prime is 385386979. The next prime is 385387063. The reversal of 385387019 is 910783583.

It is a happy number.

It is an a-pointer prime, because the next prime (385387063) can be obtained adding 385387019 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385387019 is a prime.

It is a super-2 number, since 2×385387019² = 297046308827412722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (385389019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192693509 + 192693510.

It is an arithmetic number, because the mean of its divisors is an integer number (192693510).

Almost surely, 2^385387019 is an apocalyptic number.

385387019 is a deficient number, since it is larger than the sum of its proper divisors (1).

385387019 is an equidigital number, since it uses as much as digits as its factorization.

385387019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 385387019 is about 19631.2765504437. The cubic root of 385387019 is about 727.7223177925.

The spelling of 385387019 in words is "three hundred eighty-five million, three hundred eighty-seven thousand, nineteen".