1264616216 has 64 divisors (see below), whose sum is σ = 2481684480. Its totient is φ = 603711360.

The previous prime is 1264616209. The next prime is 1264616237. The reversal of 1264616216 is 6126164621.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3390206 + ... + 3390578.

It is an arithmetic number, because the mean of its divisors is an integer number (38776320).

Almost surely, 2^1264616216 is an apocalyptic number.

It is an amenable number.

1264616216 is a deficient number, since it is larger than the sum of its proper divisors (1217068264).

1264616216 is a wasteful number, since it uses less digits than its factorization.

1264616216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624 (or 620 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 1264616216 is about 35561.4428278719. The cubic root of 1264616216 is about 1081.3997100731.

The spelling of 1264616216 in words is "one billion, two hundred sixty-four million, six hundred sixteen thousand, two hundred sixteen".