381964268 has 48 divisors (see below), whose sum is σ = 791175168. Its totient is φ = 157896000.

The previous prime is 381964267. The next prime is 381964301. The reversal of 381964268 is 862469183.

It is not an unprimeable number, because it can be changed into a prime (381964267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373598 + ... + 374618.

It is an arithmetic number, because the mean of its divisors is an integer number (16482816).

Almost surely, 2^381964268 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 381964268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (395587584).

381964268 is an abundant number, since it is smaller than the sum of its proper divisors (409210900).

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

381964268 is a wasteful number, since it uses less digits than its factorization.

381964268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494 (or 1492 counting only the distinct ones).

The product of its digits is 497664, while the sum is 47.

The square root of 381964268 is about 19543.9061602332. The cubic root of 381964268 is about 725.5615264491.

The spelling of 381964268 in words is "three hundred eighty-one million, nine hundred sixty-four thousand, two hundred sixty-eight".