11894202649 has 16 divisors (see below), whose sum is σ = 13677465600. Its totient is φ = 10132070400.

The previous prime is 11894202641. The next prime is 11894202769. The reversal of 11894202649 is 94620249811.

It is a cyclic number.

It is not a de Polignac number, because 11894202649 - 2³ = 11894202641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11894202599 and 11894202608.

It is not an unprimeable number, because it can be changed into a prime (11894202641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1551177 + ... + 1558825.

It is an arithmetic number, because the mean of its divisors is an integer number (854841600).

Almost surely, 2^11894202649 is an apocalyptic number.

It is an amenable number.

11894202649 is a deficient number, since it is larger than the sum of its proper divisors (1783262951).

11894202649 is a wasteful number, since it uses less digits than its factorization.

11894202649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9000.

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 11894202649 in words is "eleven billion, eight hundred ninety-four million, two hundred two thousand, six hundred forty-nine".