1264215546 has 32 divisors (see below), whose sum is σ = 3064766400. Its totient is φ = 383095440.

The previous prime is 1264215527. The next prime is 1264215569. The reversal of 1264215546 is 6455124621.

1264215546 is a `hidden beast` number, since 1 + 2 + 642 + 1 + 5 + 5 + 4 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1264215546.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1063561 + ... + 1064748.

It is an arithmetic number, because the mean of its divisors is an integer number (95773950).

Almost surely, 2^1264215546 is an apocalyptic number.

1264215546 is an abundant number, since it is smaller than the sum of its proper divisors (1800550854).

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

1264215546 is a wasteful number, since it uses less digits than its factorization.

1264215546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2128331 (or 2128325 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 1264215546 is about 35555.8088925003. The cubic root of 1264215546 is about 1081.2854909174.

The spelling of 1264215546 in words is "one billion, two hundred sixty-four million, two hundred fifteen thousand, five hundred forty-six".