1338725747 has 4 divisors (see below), whose sum is σ = 1338937320. Its totient is φ = 1338514176.

The previous prime is 1338725723. The next prime is 1338725767. The reversal of 1338725747 is 7475278331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7475278331 = 457 ⋅16357283.

It is a cyclic number.

It is not a de Polignac number, because 1338725747 - 2⁸ = 1338725491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1338725767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95993 + ... + 109050.

It is an arithmetic number, because the mean of its divisors is an integer number (334734330).

Almost surely, 2^1338725747 is an apocalyptic number.

1338725747 is a deficient number, since it is larger than the sum of its proper divisors (211573).

1338725747 is an equidigital number, since it uses as much as digits as its factorization.

1338725747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211572.

The product of its digits is 987840, while the sum is 47.

The square root of 1338725747 is about 36588.6013260961. The cubic root of 1338725747 is about 1102.1242002938.

The spelling of 1338725747 in words is "one billion, three hundred thirty-eight million, seven hundred twenty-five thousand, seven hundred forty-seven".