381116147 has 2 divisors, whose sum is σ = 381116148. Its totient is φ = 381116146.

The previous prime is 381116123. The next prime is 381116159. The reversal of 381116147 is 741611183.

It is a strong prime.

It is an emirp because it is prime and its reverse (741611183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 381116147 - 2¹⁰ = 381115123 is a prime.

It is not a weakly prime, because it can be changed into another prime (381116447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190558073 + 190558074.

It is an arithmetic number, because the mean of its divisors is an integer number (190558074).

Almost surely, 2^381116147 is an apocalyptic number.

381116147 is a deficient number, since it is larger than the sum of its proper divisors (1).

381116147 is an equidigital number, since it uses as much as digits as its factorization.

381116147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 32.

The square root of 381116147 is about 19522.1962647649. The cubic root of 381116147 is about 725.0241114454.

The spelling of 381116147 in words is "three hundred eighty-one million, one hundred sixteen thousand, one hundred forty-seven".