381667742 has 16 divisors (see below), whose sum is σ = 594076032. Its totient is φ = 183767640.

The previous prime is 381667733. The next prime is 381667771. The reversal of 381667742 is 247766183.

It is a junction number, because it is equal to n+sod(n) for n = 381667693 and 381667702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25148 + ... + 37359.

It is an arithmetic number, because the mean of its divisors is an integer number (37129752).

Almost surely, 2^381667742 is an apocalyptic number.

381667742 is a deficient number, since it is larger than the sum of its proper divisors (212408290).

381667742 is a wasteful number, since it uses less digits than its factorization.

381667742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62623.

The product of its digits is 338688, while the sum is 44.

The square root of 381667742 is about 19536.3185375341. The cubic root of 381667742 is about 725.3737221843.

The spelling of 381667742 in words is "three hundred eighty-one million, six hundred sixty-seven thousand, seven hundred forty-two".