1261054604 has 6 divisors (see below), whose sum is σ = 2206845564. Its totient is φ = 630527300.

The previous prime is 1261054591. The next prime is 1261054631. The reversal of 1261054604 is 4064501621.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157631822 + ... + 157631829.

It is an arithmetic number, because the mean of its divisors is an integer number (367807594).

Almost surely, 2^1261054604 is an apocalyptic number.

It is an amenable number.

1261054604 is a deficient number, since it is larger than the sum of its proper divisors (945790960).

1261054604 is a wasteful number, since it uses less digits than its factorization.

1261054604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315263655 (or 315263653 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 1261054604 is about 35511.3306424865. The cubic root of 1261054604 is about 1080.3835526117.

The spelling of 1261054604 in words is "one billion, two hundred sixty-one million, fifty-four thousand, six hundred four".