7179940745 has 4 divisors (see below), whose sum is σ = 8615928900. Its totient is φ = 5743952592.

The previous prime is 7179940697. The next prime is 7179940847. The reversal of 7179940745 is 5470499717.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3206277376 + 3973663369 = 56624^2 + 63037^2 .

It is a cyclic number.

It is not a de Polignac number, because 7179940745 - 2⁸ = 7179940489 is a prime.

It is a super-2 number, since 2×7179940745² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 717994070 + ... + 717994079.

It is an arithmetic number, because the mean of its divisors is an integer number (2153982225).

Almost surely, 2^7179940745 is an apocalyptic number.

It is an amenable number.

7179940745 is a deficient number, since it is larger than the sum of its proper divisors (1435988155).

7179940745 is a wasteful number, since it uses less digits than its factorization.

7179940745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435988154.

The product of its (nonzero) digits is 2222640, while the sum is 53.

The square root of 7179940745 is about 84734.5310071402. The cubic root of 7179940745 is about 1929.1838607678.

The spelling of 7179940745 in words is "seven billion, one hundred seventy-nine million, nine hundred forty thousand, seven hundred forty-five".