1307975747 has 4 divisors (see below), whose sum is σ = 1408589280. Its totient is φ = 1207362216.

The previous prime is 1307975731. The next prime is 1307975749. The reversal of 1307975747 is 7475797031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7475797031 = 397 ⋅18830723.

It is a cyclic number.

It is not a de Polignac number, because 1307975747 - 2⁴ = 1307975731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1307975695 and 1307975704.

It is not an unprimeable number, because it can be changed into a prime (1307975749) 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, 50306747 + ... + 50306772.

It is an arithmetic number, because the mean of its divisors is an integer number (352147320).

Almost surely, 2^1307975747 is an apocalyptic number.

1307975747 is a deficient number, since it is larger than the sum of its proper divisors (100613533).

1307975747 is a wasteful number, since it uses less digits than its factorization.

1307975747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100613532.

The product of its (nonzero) digits is 1296540, while the sum is 50.

The square root of 1307975747 is about 36165.9473400048. The cubic root of 1307975747 is about 1093.6203016080.

The spelling of 1307975747 in words is "one billion, three hundred seven million, nine hundred seventy-five thousand, seven hundred forty-seven".