1261464446 has 48 divisors (see below), whose sum is σ = 2166091200. Its totient is φ = 549890880.

The previous prime is 1261464437. The next prime is 1261464487. The reversal of 1261464446 is 6444641621.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 1213595 + ... + 1214633.

It is an arithmetic number, because the mean of its divisors is an integer number (45126900).

Almost surely, 2^1261464446 is an apocalyptic number.

1261464446 is a deficient number, since it is larger than the sum of its proper divisors (904626754).

1261464446 is a wasteful number, since it uses less digits than its factorization.

1261464446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265 (or 1254 counting only the distinct ones).

The product of its digits is 110592, while the sum is 38.

The square root of 1261464446 is about 35517.1007544253. The cubic root of 1261464446 is about 1080.5005812729.

The spelling of 1261464446 in words is "one billion, two hundred sixty-one million, four hundred sixty-four thousand, four hundred forty-six".