381039357393 has 6 divisors (see below), whose sum is σ = 550390182914. Its totient is φ = 254026238256.

The previous prime is 381039357371. The next prime is 381039357431. The reversal of 381039357393 is 393753930183.

381039357393 is a `hidden beast` number, since 38 + 1 + 0 + 39 + 3 + 573 + 9 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 213191822529 + 167847534864 = 461727^2 + 409692^2 .

It is not a de Polignac number, because 381039357393 - 2¹² = 381039353297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381039357353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21168853180 + ... + 21168853197.

Almost surely, 2^381039357393 is an apocalyptic number.

It is an amenable number.

381039357393 is a deficient number, since it is larger than the sum of its proper divisors (169350825521).

381039357393 is a wasteful number, since it uses less digits than its factorization.

381039357393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42337706383 (or 42337706380 counting only the distinct ones).

The product of its (nonzero) digits is 5511240, while the sum is 54.

The spelling of 381039357393 in words is "three hundred eighty-one billion, thirty-nine million, three hundred fifty-seven thousand, three hundred ninety-three".