381523350 has 144 divisors (see below), whose sum is σ = 1084024368. Its totient is φ = 88258560.

The previous prime is 381523349. The next prime is 381523381. The reversal of 381523350 is 53325183.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 563212 + ... + 563888.

It is an arithmetic number, because the mean of its divisors is an integer number (7527947).

Almost surely, 2^381523350 is an apocalyptic number.

381523350 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 381523350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (542012184).

381523350 is an abundant number, since it is smaller than the sum of its proper divisors (702501018).

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

381523350 is a wasteful number, since it uses less digits than its factorization.

381523350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739 (or 717 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 381523350 is about 19532.6227117610. The cubic root of 381523350 is about 725.2822365264.

The spelling of 381523350 in words is "three hundred eighty-one million, five hundred twenty-three thousand, three hundred fifty".