381030738 has 32 divisors (see below), whose sum is σ = 832410432. Its totient is φ = 115315200.

The previous prime is 381030721. The next prime is 381030751. The reversal of 381030738 is 837030183.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 381030699 and 381030708.

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 15 ways as a sum of consecutive naturals, for example, 54870 + ... + 61422.

It is an arithmetic number, because the mean of its divisors is an integer number (26012826).

Almost surely, 2^381030738 is an apocalyptic number.

381030738 is an abundant number, since it is smaller than the sum of its proper divisors (451379694).

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

381030738 is a wasteful number, since it uses less digits than its factorization.

381030738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7450.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 381030738 is about 19520.0086577850. The cubic root of 381030738 is about 724.9699475454.

The spelling of 381030738 in words is "three hundred eighty-one million, thirty thousand, seven hundred thirty-eight".