381580168826 has 16 divisors (see below), whose sum is σ = 587636418600. Its totient is φ = 185722091520.

The previous prime is 381580168757. The next prime is 381580168901. The reversal of 381580168826 is 628861085183.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 334545403201 + 47034765625 = 578399^2 + 216875^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5145161 + ... + 5218796.

Almost surely, 2^381580168826 is an apocalyptic number.

381580168826 is a deficient number, since it is larger than the sum of its proper divisors (206056249774).

381580168826 is a wasteful number, since it uses less digits than its factorization.

381580168826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10364449.

The product of its (nonzero) digits is 4423680, while the sum is 56.

The spelling of 381580168826 in words is "three hundred eighty-one billion, five hundred eighty million, one hundred sixty-eight thousand, eight hundred twenty-six".