1307665944 has 80 divisors (see below), whose sum is σ = 3944445120. Its totient is φ = 402356160.

The previous prime is 1307665871. The next prime is 1307665949. The reversal of 1307665944 is 4495667031.

It is a super-2 number, since 2×1307665944² = 3419980442194822272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1307665944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1307665949) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 69192 + ... + 86039.

It is an arithmetic number, because the mean of its divisors is an integer number (49305564).

Almost surely, 2^1307665944 is an apocalyptic number.

It is an amenable number.

1307665944 is an abundant number, since it is smaller than the sum of its proper divisors (2636779176).

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

1307665944 is a wasteful number, since it uses less digits than its factorization.

1307665944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155262 (or 155249 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The square root of 1307665944 is about 36161.6640103854. The cubic root of 1307665944 is about 1093.5339509744.

The spelling of 1307665944 in words is "one billion, three hundred seven million, six hundred sixty-five thousand, nine hundred forty-four".