381906022149 has 8 divisors (see below), whose sum is σ = 565786699520. Its totient is φ = 254604014748.

The previous prime is 381906022139. The next prime is 381906022207. The reversal of 381906022149 is 941220609183.

381906022149 is a `hidden beast` number, since 3 + 8 + 19 + 0 + 602 + 21 + 4 + 9 = 666.

It is not a de Polignac number, because 381906022149 - 2¹⁹ = 381905497861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381906022129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7072333717 + ... + 7072333770.

It is an arithmetic number, because the mean of its divisors is an integer number (70723337440).

Almost surely, 2^381906022149 is an apocalyptic number.

It is an amenable number.

381906022149 is a deficient number, since it is larger than the sum of its proper divisors (183880677371).

381906022149 is a wasteful number, since it uses less digits than its factorization.

381906022149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14144667496 (or 14144667490 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 381906022149 in words is "three hundred eighty-one billion, nine hundred six million, twenty-two thousand, one hundred forty-nine".