381446681147 has 16 divisors (see below), whose sum is σ = 460183234560. Its totient is φ = 308868671232.

The previous prime is 381446681137. The next prime is 381446681171. The reversal of 381446681147 is 741186644183.

It is a cyclic number.

It is not a de Polignac number, because 381446681147 - 2⁴ = 381446681131 is a prime.

It is a super-2 number, since 2×381446681147² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (381446681137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4015403 + ... + 4109300.

It is an arithmetic number, because the mean of its divisors is an integer number (28761452160).

Almost surely, 2^381446681147 is an apocalyptic number.

381446681147 is a deficient number, since it is larger than the sum of its proper divisors (78736553413).

381446681147 is a wasteful number, since it uses less digits than its factorization.

381446681147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8125082.

The product of its digits is 3096576, while the sum is 53.

The spelling of 381446681147 in words is "three hundred eighty-one billion, four hundred forty-six million, six hundred eighty-one thousand, one hundred forty-seven".