1246916045889 has 6 divisors (see below), whose sum is σ = 1801100955186. Its totient is φ = 831277363920.

The previous prime is 1246916045867. The next prime is 1246916045911. The reversal of 1246916045889 is 9885406196421.

1246916045889 is a `hidden beast` number, since 1 + 2 + 46 + 9 + 1 + 6 + 0 + 4 + 588 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (1246916045867) and next prime (1246916045911).

It can be written as a sum of positive squares in only one way, i.e., 1055072045889 + 191844000000 = 1027167^2 + 438000^2 .

It is not a de Polignac number, because 1246916045889 - 2²⁰ = 1246914997313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1246916045689) 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 5 ways as a sum of consecutive naturals, for example, 69273113652 + ... + 69273113669.

It is an arithmetic number, because the mean of its divisors is an integer number (300183492531).

Almost surely, 2^{1246916045889} is an apocalyptic number.

It is an amenable number.

1246916045889 is a deficient number, since it is larger than the sum of its proper divisors (554184909297).

1246916045889 is a wasteful number, since it uses less digits than its factorization.

1246916045889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138546227327 (or 138546227324 counting only the distinct ones).

The product of its (nonzero) digits is 29859840, while the sum is 63.

The spelling of 1246916045889 in words is "one trillion, two hundred forty-six billion, nine hundred sixteen million, forty-five thousand, eight hundred eighty-nine".