946988888889649 has 4 divisors (see below), whose sum is σ = 946989597343860. Its totient is φ = 946988180435440.

The previous prime is 946988888889643. The next prime is 946988888889737.

946988888889649 is nontrivially palindromic in base 10.

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 387805584128400 + 559183304761249 = 19692780^2 + 23647057^2 .

It is a cyclic number.

It is not a de Polignac number, because 946988888889649 - 2²¹ = 946988886792497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (946988888889643) by changing a digit.

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, 352218262 + ... + 354896719.

It is an arithmetic number, because the mean of its divisors is an integer number (236747399335965).

Almost surely, 2^{946988888889649} is an apocalyptic number.

It is an amenable number.

946988888889649 is a deficient number, since it is larger than the sum of its proper divisors (708454211).

946988888889649 is a wasteful number, since it uses less digits than its factorization.

946988888889649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708454210.

The product of its digits is 7925422620672, while the sum is 112.

The spelling of 946988888889649 in words is "nine hundred forty-six trillion, nine hundred eighty-eight billion, eight hundred eighty-eight million, eight hundred eighty-nine thousand, six hundred forty-nine".