381730930 has 32 divisors (see below), whose sum is σ = 788150016. Its totient is φ = 130400064.

The previous prime is 381730927. The next prime is 381730933. The reversal of 381730930 is 39037183.

It is an interprime number because it is at equal distance from previous prime (381730927) and next prime (381730933).

It is not an unprimeable number, because it can be changed into a prime (381730933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9547 + ... + 29233.

It is an arithmetic number, because the mean of its divisors is an integer number (24629688).

Almost surely, 2^381730930 is an apocalyptic number.

381730930 is an abundant number, since it is smaller than the sum of its proper divisors (406419086).

381730930 is a wasteful number, since it uses less digits than its factorization.

381730930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19978.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 381730930 is about 19537.9356637287. The cubic root of 381730930 is about 725.4137503558.

The spelling of 381730930 in words is "three hundred eighty-one million, seven hundred thirty thousand, nine hundred thirty".