381483187 has 2 divisors, whose sum is σ = 381483188. Its totient is φ = 381483186.

The previous prime is 381483169. The next prime is 381483191. The reversal of 381483187 is 781384183.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381483187 is a prime.

It is not a weakly prime, because it can be changed into another prime (381486187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190741593 + 190741594.

It is an arithmetic number, because the mean of its divisors is an integer number (190741594).

Almost surely, 2^381483187 is an apocalyptic number.

381483187 is a deficient number, since it is larger than the sum of its proper divisors (1).

381483187 is an equidigital number, since it uses as much as digits as its factorization.

381483187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 43.

The square root of 381483187 is about 19531.5945841603. The cubic root of 381483187 is about 725.2567854562.

The spelling of 381483187 in words is "three hundred eighty-one million, four hundred eighty-three thousand, one hundred eighty-seven".