385137612 has 48 divisors (see below), whose sum is σ = 1002265600. Its totient is φ = 127895760.

The previous prime is 385137589. The next prime is 385137631. The reversal of 385137612 is 216731583.

385137612 is a `hidden beast` number, since 3 + 8 + 5 + 1 + 37 + 612 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22689 + ... + 35847.

Almost surely, 2^385137612 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 385137612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (501132800).

385137612 is an abundant number, since it is smaller than the sum of its proper divisors (617127988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

385137612 is a wasteful number, since it uses less digits than its factorization.

385137612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13443 (or 13435 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 385137612 is about 19624.9232355187. The cubic root of 385137612 is about 727.5652996971.

The spelling of 385137612 in words is "three hundred eighty-five million, one hundred thirty-seven thousand, six hundred twelve".