1264289166 has 24 divisors (see below), whose sum is σ = 3130621104. Its totient is φ = 361225440.

The previous prime is 1264289137. The next prime is 1264289177. The reversal of 1264289166 is 6619824621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5016895 + ... + 5017146.

It is an arithmetic number, because the mean of its divisors is an integer number (130442546).

Almost surely, 2^1264289166 is an apocalyptic number.

1264289166 is an abundant number, since it is smaller than the sum of its proper divisors (1866331938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1264289166 is a wasteful number, since it uses less digits than its factorization.

1264289166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10034056 (or 10034053 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 1264289166 is about 35556.8441513023. The cubic root of 1264289166 is about 1081.3064796095.

The spelling of 1264289166 in words is "one billion, two hundred sixty-four million, two hundred eighty-nine thousand, one hundred sixty-six".