1381270747 has 2 divisors, whose sum is σ = 1381270748. Its totient is φ = 1381270746.

The previous prime is 1381270739. The next prime is 1381270753. The reversal of 1381270747 is 7470721831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1381270747 - 2³ = 1381270739 is a prime.

It is not a weakly prime, because it can be changed into another prime (1381270447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690635373 + 690635374.

It is an arithmetic number, because the mean of its divisors is an integer number (690635374).

Almost surely, 2^1381270747 is an apocalyptic number.

1381270747 is a deficient number, since it is larger than the sum of its proper divisors (1).

1381270747 is an equidigital number, since it uses as much as digits as its factorization.

1381270747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65856, while the sum is 40.

The square root of 1381270747 is about 37165.4509860973. The cubic root of 1381270747 is about 1113.6779082619.

The spelling of 1381270747 in words is "one billion, three hundred eighty-one million, two hundred seventy thousand, seven hundred forty-seven".