7949644245 has 12 divisors (see below), whose sum is σ = 13779383436. Its totient is φ = 4239810240.

The previous prime is 7949644243. The next prime is 7949644253. The reversal of 7949644245 is 5424469497.

7949644245 is a `hidden beast` number, since 79 + 4 + 96 + 442 + 45 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2653589169 + 5296055076 = 51513^2 + 72774^2 .

It is not a de Polignac number, because 7949644245 - 2¹ = 7949644243 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7949644191 and 7949644200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7949644243) 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, 88329336 + ... + 88329425.

It is an arithmetic number, because the mean of its divisors is an integer number (1148281953).

Almost surely, 2^7949644245 is an apocalyptic number.

It is an amenable number.

7949644245 is a deficient number, since it is larger than the sum of its proper divisors (5829739191).

7949644245 is a wasteful number, since it uses less digits than its factorization.

7949644245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176658772 (or 176658769 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 54.

The square root of 7949644245 is about 89160.7775033394. Note that the first 3 decimals coincide. The cubic root of 7949644245 is about 1995.7948516437.

The spelling of 7949644245 in words is "seven billion, nine hundred forty-nine million, six hundred forty-four thousand, two hundred forty-five".