1388160971 has 2 divisors, whose sum is σ = 1388160972. Its totient is φ = 1388160970.

The previous prime is 1388160967. The next prime is 1388161031. The reversal of 1388160971 is 1790618831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1388160971 - 2² = 1388160967 is a prime.

It is not a weakly prime, because it can be changed into another prime (1388160901) 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 as a sum of consecutive naturals, namely, 694080485 + 694080486.

It is an arithmetic number, because the mean of its divisors is an integer number (694080486).

Almost surely, 2^1388160971 is an apocalyptic number.

1388160971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1388160971 is an equidigital number, since it uses as much as digits as its factorization.

1388160971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 1388160971 is about 37258.0323017735. The cubic root of 1388160971 is about 1115.5266325204.

The spelling of 1388160971 in words is "one billion, three hundred eighty-eight million, one hundred sixty thousand, nine hundred seventy-one".