381169958399 has 4 divisors (see below), whose sum is σ = 381372818160. Its totient is φ = 380967098640.

The previous prime is 381169958381. The next prime is 381169958431. The reversal of 381169958399 is 993859961183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 993859961183 = 6689 ⋅148581247.

It is a cyclic number.

It is not a de Polignac number, because 381169958399 - 2³⁶ = 312450481663 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 (381169958339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101427062 + ... + 101430819.

It is an arithmetic number, because the mean of its divisors is an integer number (95343204540).

Almost surely, 2^381169958399 is an apocalyptic number.

381169958399 is a deficient number, since it is larger than the sum of its proper divisors (202859761).

381169958399 is a wasteful number, since it uses less digits than its factorization.

381169958399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202859760.

The product of its digits is 113374080, while the sum is 71.

The spelling of 381169958399 in words is "three hundred eighty-one billion, one hundred sixty-nine million, nine hundred fifty-eight thousand, three hundred ninety-nine".