381405784471 has 2 divisors, whose sum is σ = 381405784472. Its totient is φ = 381405784470.

The previous prime is 381405784451. The next prime is 381405784489. The reversal of 381405784471 is 174487504183.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 381405784471 - 2¹¹ = 381405782423 is a prime.

It is a super-3 number, since 3×381405784471³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381405784411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190702892235 + 190702892236.

It is an arithmetic number, because the mean of its divisors is an integer number (190702892236).

Almost surely, 2^381405784471 is an apocalyptic number.

381405784471 is a deficient number, since it is larger than the sum of its proper divisors (1).

381405784471 is an equidigital number, since it uses as much as digits as its factorization.

381405784471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3010560, while the sum is 52.

The spelling of 381405784471 in words is "three hundred eighty-one billion, four hundred five million, seven hundred eighty-four thousand, four hundred seventy-one".