381984167443 has 4 divisors (see below), whose sum is σ = 382488770800. Its totient is φ = 381479564088.

The previous prime is 381984167431. The next prime is 381984167449. The reversal of 381984167443 is 344761489183.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381984167443 is a prime.

It is a super-2 number, since 2×381984167443² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381984167449) 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, 252300543 + ... + 252302056.

It is an arithmetic number, because the mean of its divisors is an integer number (95622192700).

Almost surely, 2^381984167443 is an apocalyptic number.

381984167443 is a deficient number, since it is larger than the sum of its proper divisors (504603357).

381984167443 is an equidigital number, since it uses as much as digits as its factorization.

381984167443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504603356.

The product of its digits is 13934592, while the sum is 58.

The spelling of 381984167443 in words is "three hundred eighty-one billion, nine hundred eighty-four million, one hundred sixty-seven thousand, four hundred forty-three".