8119640426 has 8 divisors (see below), whose sum is σ = 12291199140. Its totient is φ = 4022574048.

The previous prime is 8119640413. The next prime is 8119640437. The reversal of 8119640426 is 6240469118.

It can be written as a sum of positive squares in 2 ways, for example, as 7638934801 + 480705625 = 87401^2 + 21925^2 .

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

It is a super-2 number, since 2×8119640426² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18622811 + ... + 18623246.

Almost surely, 2^8119640426 is an apocalyptic number.

8119640426 is a deficient number, since it is larger than the sum of its proper divisors (4171558714).

8119640426 is a wasteful number, since it uses less digits than its factorization.

8119640426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37246168.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 8119640426 is about 90109.0474147852. The cubic root of 8119640426 is about 2009.9207435561.

The spelling of 8119640426 in words is "eight billion, one hundred nineteen million, six hundred forty thousand, four hundred twenty-six".