8474312381 has 4 divisors (see below), whose sum is σ = 8474657664. Its totient is φ = 8473967100.

The previous prime is 8474312359. The next prime is 8474312389. The reversal of 8474312381 is 1832134748.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8474312381 - 2²² = 8470118077 is a prime.

It is a super-2 number, since 2×8474312381² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8474312389) 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 3 ways as a sum of consecutive naturals, for example, 132755 + ... + 185936.

It is an arithmetic number, because the mean of its divisors is an integer number (2118664416).

Almost surely, 2^8474312381 is an apocalyptic number.

It is an amenable number.

8474312381 is a deficient number, since it is larger than the sum of its proper divisors (345283).

8474312381 is a wasteful number, since it uses less digits than its factorization.

8474312381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345282.

The product of its digits is 129024, while the sum is 41.

The square root of 8474312381 is about 92056.0284880898. The cubic root of 8474312381 is about 2038.7696333456.

The spelling of 8474312381 in words is "eight billion, four hundred seventy-four million, three hundred twelve thousand, three hundred eighty-one".