385191648 has 72 divisors (see below), whose sum is σ = 1114003800. Its totient is φ = 126215424.

The previous prime is 385191623. The next prime is 385191673. The reversal of 385191648 is 846191583.

It is an interprime number because it is at equal distance from previous prime (385191623) and next prime (385191673).

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5658 + ... + 28326.

It is an arithmetic number, because the mean of its divisors is an integer number (15472275).

Almost surely, 2^385191648 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 385191648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (557001900).

385191648 is an abundant number, since it is smaller than the sum of its proper divisors (728812152).

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

385191648 is a wasteful number, since it uses less digits than its factorization.

385191648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22744 (or 22733 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 385191648 is about 19626.2999059935. The cubic root of 385191648 is about 727.5993246610.

The spelling of 385191648 in words is "three hundred eighty-five million, one hundred ninety-one thousand, six hundred forty-eight".