1260475644 has 12 divisors (see below), whose sum is σ = 2941109864. Its totient is φ = 420158544.

The previous prime is 1260475639. The next prime is 1260475649. The reversal of 1260475644 is 4465740621.

It is an interprime number because it is at equal distance from previous prime (1260475639) and next prime (1260475649).

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1260475649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52519807 + ... + 52519830.

Almost surely, 2^1260475644 is an apocalyptic number.

It is an amenable number.

1260475644 is an abundant number, since it is smaller than the sum of its proper divisors (1680634220).

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

1260475644 is a wasteful number, since it uses less digits than its factorization.

1260475644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105039644 (or 105039642 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The square root of 1260475644 is about 35503.1779422631. The cubic root of 1260475644 is about 1080.2181897987.

The spelling of 1260475644 in words is "one billion, two hundred sixty million, four hundred seventy-five thousand, six hundred forty-four".