1264841836 has 12 divisors (see below), whose sum is σ = 2228133040. Its totient is φ = 628232400.

The previous prime is 1264841813. The next prime is 1264841843. The reversal of 1264841836 is 6381484621.

It is a junction number, because it is equal to n+sod(n) for n = 1264841792 and 1264841801.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1046451 + ... + 1047658.

Almost surely, 2^1264841836 is an apocalyptic number.

It is an amenable number.

1264841836 is a deficient number, since it is larger than the sum of its proper divisors (963291204).

1264841836 is a wasteful number, since it uses less digits than its factorization.

1264841836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2094264 (or 2094262 counting only the distinct ones).

The product of its digits is 221184, while the sum is 43.

The square root of 1264841836 is about 35564.6149423834. The cubic root of 1264841836 is about 1081.4640170386.

The spelling of 1264841836 in words is "one billion, two hundred sixty-four million, eight hundred forty-one thousand, eight hundred thirty-six".