8119640427 has 8 divisors (see below), whose sum is σ = 10831974864. Its totient is φ = 5410199808.

The previous prime is 8119640413. The next prime is 8119640437. The reversal of 8119640427 is 7240469118.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8119640427 - 2⁷ = 8119640299 is a prime.

It is a super-3 number, since 3×8119640427³ (a number of 31 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (8119640437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 716898 + ... + 728135.

It is an arithmetic number, because the mean of its divisors is an integer number (1353996858).

Almost surely, 2^8119640427 is an apocalyptic number.

8119640427 is a deficient number, since it is larger than the sum of its proper divisors (2712334437).

8119640427 is a wasteful number, since it uses less digits than its factorization.

8119640427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1446909.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 8119640427 is about 90109.0474203340. The cubic root of 8119640427 is about 2009.9207436386.

The spelling of 8119640427 in words is "eight billion, one hundred nineteen million, six hundred forty thousand, four hundred twenty-seven".