1971675047 has 4 divisors (see below), whose sum is σ = 1973976576. Its totient is φ = 1969373520.

The previous prime is 1971675019. The next prime is 1971675061. The reversal of 1971675047 is 7405761791.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1971675047 - 2⁸ = 1971674791 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1971674992 and 1971675010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1971675007) 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, 1149479 + ... + 1151192.

It is an arithmetic number, because the mean of its divisors is an integer number (493494144).

Almost surely, 2^1971675047 is an apocalyptic number.

1971675047 is a deficient number, since it is larger than the sum of its proper divisors (2301529).

1971675047 is an equidigital number, since it uses as much as digits as its factorization.

1971675047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2301528.

The product of its (nonzero) digits is 370440, while the sum is 47.

The square root of 1971675047 is about 44403.5476848416. The cubic root of 1971675047 is about 1253.9448805970.

The spelling of 1971675047 in words is "one billion, nine hundred seventy-one million, six hundred seventy-five thousand, forty-seven".