1270172647 has 2 divisors, whose sum is σ = 1270172648. Its totient is φ = 1270172646.

The previous prime is 1270172609. The next prime is 1270172671. The reversal of 1270172647 is 7462710721.

It is a strong prime.

It is an emirp because it is prime and its reverse (7462710721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1270172647 - 2²³ = 1261784039 is a prime.

It is a super-2 number, since 2×1270172647² = 3226677106373973218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1270172147) 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, 635086323 + 635086324.

It is an arithmetic number, because the mean of its divisors is an integer number (635086324).

Almost surely, 2^1270172647 is an apocalyptic number.

1270172647 is a deficient number, since it is larger than the sum of its proper divisors (1).

1270172647 is an equidigital number, since it uses as much as digits as its factorization.

1270172647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32928, while the sum is 37.

The square root of 1270172647 is about 35639.4815759152. The cubic root of 1270172647 is about 1082.9812027828.

The spelling of 1270172647 in words is "one billion, two hundred seventy million, one hundred seventy-two thousand, six hundred forty-seven".