381475727351 has 2 divisors, whose sum is σ = 381475727352. Its totient is φ = 381475727350.

The previous prime is 381475727333. The next prime is 381475727401. The reversal of 381475727351 is 153727574183.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 381475727351 - 2¹⁰ = 381475726327 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 381475727293 and 381475727302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381475777351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190737863675 + 190737863676.

It is an arithmetic number, because the mean of its divisors is an integer number (190737863676).

Almost surely, 2^381475727351 is an apocalyptic number.

381475727351 is a deficient number, since it is larger than the sum of its proper divisors (1).

381475727351 is an equidigital number, since it uses as much as digits as its factorization.

381475727351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4939200, while the sum is 53.

The spelling of 381475727351 in words is "three hundred eighty-one billion, four hundred seventy-five million, seven hundred twenty-seven thousand, three hundred fifty-one".