9194454649 has 4 divisors (see below), whose sum is σ = 9197348260. Its totient is φ = 9191561040.

The previous prime is 9194454593. The next prime is 9194454671. The reversal of 9194454649 is 9464544919.

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 5405190400 + 3789264249 = 73520^2 + 61557^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9194454649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9194454649.

It is not an unprimeable number, because it can be changed into a prime (9194454679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1442034 + ... + 1448395.

It is an arithmetic number, because the mean of its divisors is an integer number (2299337065).

Almost surely, 2^9194454649 is an apocalyptic number.

It is an amenable number.

9194454649 is a deficient number, since it is larger than the sum of its proper divisors (2893611).

9194454649 is a wasteful number, since it uses less digits than its factorization.

9194454649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2893610.

The product of its digits is 5598720, while the sum is 55.

The square root of 9194454649 is about 95887.7189685937. The cubic root of 9194454649 is about 2094.9580212708.

The spelling of 9194454649 in words is "nine billion, one hundred ninety-four million, four hundred fifty-four thousand, six hundred forty-nine".