7949916169 has 8 divisors (see below), whose sum is σ = 8562412040. Its totient is φ = 7337558016.

The previous prime is 7949916157. The next prime is 7949916187. The reversal of 7949916169 is 9616199497.

It can be written as a sum of positive squares in 4 ways, for example, as 950920569 + 6998995600 = 30837^2 + 83660^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 7949916169 - 2⁵ = 7949916137 is a prime.

It is a super-2 number, since 2×7949916169² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7949916269) 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, 107017 + ... + 165385.

It is an arithmetic number, because the mean of its divisors is an integer number (1070301505).

Almost surely, 2^7949916169 is an apocalyptic number.

It is an amenable number.

7949916169 is a deficient number, since it is larger than the sum of its proper divisors (612495871).

7949916169 is a wasteful number, since it uses less digits than its factorization.

7949916169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68859.

The product of its digits is 6613488, while the sum is 61.

The square root of 7949916169 is about 89162.3023984913. The cubic root of 7949916169 is about 1995.8176073090.

The spelling of 7949916169 in words is "seven billion, nine hundred forty-nine million, nine hundred sixteen thousand, one hundred sixty-nine".