385748481 has 4 divisors (see below), whose sum is σ = 514331312. Its totient is φ = 257165652.

The previous prime is 385748471. The next prime is 385748483. The reversal of 385748481 is 184847583.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 385748481 - 2⁷ = 385748353 is a prime.

It is a super-2 number, since 2×385748481² = 297603781187614722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 385748481.

It is not an unprimeable number, because it can be changed into a prime (385748483) 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, 64291411 + ... + 64291416.

It is an arithmetic number, because the mean of its divisors is an integer number (128582828).

Almost surely, 2^385748481 is an apocalyptic number.

It is an amenable number.

385748481 is a deficient number, since it is larger than the sum of its proper divisors (128582831).

385748481 is a wasteful number, since it uses less digits than its factorization.

385748481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128582830.

The product of its digits is 860160, while the sum is 48.

The square root of 385748481 is about 19640.4806713074. The cubic root of 385748481 is about 727.9497616833.

The spelling of 385748481 in words is "three hundred eighty-five million, seven hundred forty-eight thousand, four hundred eighty-one".