1246945572 has 18 divisors (see below), whose sum is σ = 3152001398. Its totient is φ = 415648512.

The previous prime is 1246945571. The next prime is 1246945607. The reversal of 1246945572 is 2755496421.

1246945572 is a `hidden beast` number, since 1 + 2 + 4 + 6 + 94 + 557 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 943349796 + 303595776 = 30714^2 + 17424^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1246945571) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17318653 + ... + 17318724.

Almost surely, 2^1246945572 is an apocalyptic number.

1246945572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1246945572 is an abundant number, since it is smaller than the sum of its proper divisors (1905055826).

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

1246945572 is a wasteful number, since it uses less digits than its factorization.

1246945572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34637387 (or 34637382 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 1246945572 is about 35312.1165041123. The cubic root of 1246945572 is about 1076.3392206302.

The spelling of 1246945572 in words is "one billion, two hundred forty-six million, nine hundred forty-five thousand, five hundred seventy-two".