381493394183 has 32 divisors (see below), whose sum is σ = 435451161600. Its totient is φ = 331033248000.

The previous prime is 381493394179. The next prime is 381493394189.

381493394183 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 381493394183 - 2² = 381493394179 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381493394189) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19737398 + ... + 19756716.

It is an arithmetic number, because the mean of its divisors is an integer number (13607848800).

Almost surely, 2^381493394183 is an apocalyptic number.

381493394183 is a deficient number, since it is larger than the sum of its proper divisors (53957767417).

381493394183 is a wasteful number, since it uses less digits than its factorization.

381493394183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20063.

The product of its digits is 6718464, while the sum is 56.

The spelling of 381493394183 in words is "three hundred eighty-one billion, four hundred ninety-three million, three hundred ninety-four thousand, one hundred eighty-three".