1264164157868 has 24 divisors (see below), whose sum is σ = 2249534187264. Its totient is φ = 621449136000.

The previous prime is 1264164157859. The next prime is 1264164157889. The reversal of 1264164157868 is 8687514614621.

It is a super-3 number, since 3×1264164157868³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 567308 + ... + 1688243.

It is an arithmetic number, because the mean of its divisors is an integer number (93730591136).

Almost surely, 2^{1264164157868} is an apocalyptic number.

It is an amenable number.

1264164157868 is a deficient number, since it is larger than the sum of its proper divisors (985370029396).

1264164157868 is a wasteful number, since it uses less digits than its factorization.

1264164157868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2257913 (or 2257911 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 59.

The spelling of 1264164157868 in words is "one trillion, two hundred sixty-four billion, one hundred sixty-four million, one hundred fifty-seven thousand, eight hundred sixty-eight".