385215019 has 12 divisors (see below), whose sum is σ = 474467544. Its totient is φ = 310761024.

The previous prime is 385215013. The next prime is 385215023. The reversal of 385215019 is 910512583.

It is not a de Polignac number, because 385215019 - 2⁷ = 385214891 is a prime.

It is a super-3 number, since 3×385215019³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385215013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 230389 + ... + 232054.

It is an arithmetic number, because the mean of its divisors is an integer number (39538962).

Almost surely, 2^385215019 is an apocalyptic number.

385215019 is a deficient number, since it is larger than the sum of its proper divisors (89252525).

385215019 is a wasteful number, since it uses less digits than its factorization.

385215019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462474 (or 462467 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 385215019 is about 19626.8952970153. The cubic root of 385215019 is about 727.6140397429.

The spelling of 385215019 in words is "three hundred eighty-five million, two hundred fifteen thousand, nineteen".