8381219401 has 9 divisors (see below), whose sum is σ = 8491112749. Its totient is φ = 8272733836.

The previous prime is 8381219387. The next prime is 8381219449. The reversal of 8381219401 is 1049121838.

The square root of 8381219401 is 91549.

It is a perfect power (a square), and thus also a powerful number.

8381219401 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8381219401 - 2⁵ = 8381219369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8381219461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7598016 + ... + 7599118.

Almost surely, 2^8381219401 is an apocalyptic number.

8381219401 is the 91549-th square number.

8381219401 is the 45775-th centered octagonal number.

It is an amenable number.

8381219401 is a deficient number, since it is larger than the sum of its proper divisors (109893348).

8381219401 is an frugal number, since it uses more digits than its factorization.

8381219401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2372 (or 1186 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 37.

The cubic root of 8381219401 is about 2031.2766202921.

The spelling of 8381219401 in words is "eight billion, three hundred eighty-one million, two hundred nineteen thousand, four hundred one".