381851158 has 16 divisors (see below), whose sum is σ = 617160096. Its totient is φ = 176146560.

The previous prime is 381851153. The next prime is 381851159. The reversal of 381851158 is 851158183.

It is a self number, because there is not a number n which added to its sum of digits gives 381851158.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381851153) by changing a digit.

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, 87918 + ... + 92158.

It is an arithmetic number, because the mean of its divisors is an integer number (38572506).

Almost surely, 2^381851158 is an apocalyptic number.

381851158 is a deficient number, since it is larger than the sum of its proper divisors (235308938).

381851158 is a wasteful number, since it uses less digits than its factorization.

381851158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7719.

The product of its digits is 38400, while the sum is 40.

The square root of 381851158 is about 19541.0122051034. The cubic root of 381851158 is about 725.4898998832.

The spelling of 381851158 in words is "three hundred eighty-one million, eight hundred fifty-one thousand, one hundred fifty-eight".