381267838 has 16 divisors (see below), whose sum is σ = 656486784. Its totient is φ = 162679320.

The previous prime is 381267811. The next prime is 381267839. The reversal of 381267838 is 838762183.

381267838 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381267839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56808 + ... + 63163.

It is an arithmetic number, because the mean of its divisors is an integer number (41030424).

Almost surely, 2^381267838 is an apocalyptic number.

381267838 is a deficient number, since it is larger than the sum of its proper divisors (275218946).

381267838 is a wasteful number, since it uses less digits than its factorization.

381267838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120207.

The product of its digits is 387072, while the sum is 46.

The square root of 381267838 is about 19526.0809687966. The cubic root of 381267838 is about 725.1202895137.

It can be divided in two parts, 38 and 1267838, that added together give a square (1267876 = 1126²).

The spelling of 381267838 in words is "three hundred eighty-one million, two hundred sixty-seven thousand, eight hundred thirty-eight".