385509016 has 16 divisors (see below), whose sum is σ = 729586440. Its totient is φ = 190952640.

The previous prime is 385509013. The next prime is 385509043. The reversal of 385509016 is 610905583.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385509013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224325 + ... + 226036.

Almost surely, 2^385509016 is an apocalyptic number.

It is an amenable number.

385509016 is a deficient number, since it is larger than the sum of its proper divisors (344077424).

385509016 is a wasteful number, since it uses less digits than its factorization.

385509016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450474 (or 450470 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 385509016 is about 19634.3835146408. The cubic root of 385509016 is about 727.7990982486.

The spelling of 385509016 in words is "three hundred eighty-five million, five hundred nine thousand, sixteen".