381473771 has 6 divisors (see below), whose sum is σ = 443755260. Its totient is φ = 326977476.

The previous prime is 381473767. The next prime is 381473783. The reversal of 381473771 is 177374183.

It is not a de Polignac number, because 381473771 - 2² = 381473767 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381473711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3892541 + ... + 3892638.

It is an arithmetic number, because the mean of its divisors is an integer number (73959210).

Almost surely, 2^381473771 is an apocalyptic number.

381473771 is a deficient number, since it is larger than the sum of its proper divisors (62281489).

381473771 is an equidigital number, since it uses as much as digits as its factorization.

381473771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7785193 (or 7785186 counting only the distinct ones).

The product of its digits is 98784, while the sum is 41.

The square root of 381473771 is about 19531.3535373256. The cubic root of 381473771 is about 725.2508183308.

The spelling of 381473771 in words is "three hundred eighty-one million, four hundred seventy-three thousand, seven hundred seventy-one".