7930438605 has 12 divisors (see below), whose sum is σ = 13746093660. Its totient is φ = 4229567232.

The previous prime is 7930438577. The next prime is 7930438609. The reversal of 7930438605 is 5068340397.

7930438605 is a `hidden beast` number, since 7 + 9 + 3 + 0 + 4 + 38 + 605 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4656424644 + 3274013961 = 68238^2 + 57219^2 .

It is not a de Polignac number, because 7930438605 - 2⁶ = 7930438541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 176231969 = 7930438605 / (7 + 9 + 3 + 0 + 4 + 3 + 8 + 6 + 0 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7930438609) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88115940 + ... + 88116029.

It is an arithmetic number, because the mean of its divisors is an integer number (1145507805).

Almost surely, 2^7930438605 is an apocalyptic number.

It is an amenable number.

7930438605 is a deficient number, since it is larger than the sum of its proper divisors (5815655055).

7930438605 is a wasteful number, since it uses less digits than its factorization.

7930438605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176231980 (or 176231977 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The square root of 7930438605 is about 89053.0100838821. The cubic root of 7930438605 is about 1994.1863341023.

The spelling of 7930438605 in words is "seven billion, nine hundred thirty million, four hundred thirty-eight thousand, six hundred five".