381571148 has 48 divisors (see below), whose sum is σ = 806937600. Its totient is φ = 154224000.

The previous prime is 381571147. The next prime is 381571153. The reversal of 381571148 is 841175183.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (381571147) 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, 125648 + ... + 128648.

It is an arithmetic number, because the mean of its divisors is an integer number (16811200).

Almost surely, 2^381571148 is an apocalyptic number.

381571148 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381571148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (403468800).

381571148 is an abundant number, since it is smaller than the sum of its proper divisors (425366452).

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

381571148 is a wasteful number, since it uses less digits than its factorization.

381571148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3270 (or 3268 counting only the distinct ones).

The product of its digits is 26880, while the sum is 38.

The square root of 381571148 is about 19533.8462162473. The cubic root of 381571148 is about 725.3125235261.

The spelling of 381571148 in words is "three hundred eighty-one million, five hundred seventy-one thousand, one hundred forty-eight".