381929340 has 48 divisors (see below), whose sum is σ = 1151666208. Its totient is φ = 94013184.

The previous prime is 381929323. The next prime is 381929341. The reversal of 381929340 is 43929183.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381929341) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 244047 + ... + 245606.

It is an arithmetic number, because the mean of its divisors is an integer number (23993046).

Almost surely, 2^381929340 is an apocalyptic number.

381929340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

381929340 is an abundant number, since it is smaller than the sum of its proper divisors (769736868).

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

381929340 is a wasteful number, since it uses less digits than its factorization.

381929340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489678 (or 489676 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 381929340 is about 19543.0125620386. The cubic root of 381929340 is about 725.5394099078.

The spelling of 381929340 in words is "three hundred eighty-one million, nine hundred twenty-nine thousand, three hundred forty".