381905030 has 16 divisors (see below), whose sum is σ = 740308464. Its totient is φ = 141011040.

The previous prime is 381905021. The next prime is 381905071. The reversal of 381905030 is 30509183.

It is a junction number, because it is equal to n+sod(n) for n = 381904984 and 381905002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1468736 + ... + 1468995.

It is an arithmetic number, because the mean of its divisors is an integer number (46269279).

Almost surely, 2^381905030 is an apocalyptic number.

381905030 is a deficient number, since it is larger than the sum of its proper divisors (358403434).

381905030 is a wasteful number, since it uses less digits than its factorization.

381905030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2937751.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 381905030 is about 19542.3905907133. The cubic root of 381905030 is about 725.5240159283.

The spelling of 381905030 in words is "three hundred eighty-one million, nine hundred five thousand, thirty".