1671976547 has 2 divisors, whose sum is σ = 1671976548. Its totient is φ = 1671976546.

The previous prime is 1671976519. The next prime is 1671976549. The reversal of 1671976547 is 7456791761.

It is a strong prime.

It is an emirp because it is prime and its reverse (7456791761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1671976547 - 2¹⁶ = 1671911011 is a prime.

Together with 1671976549, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1671976549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 835988273 + 835988274.

It is an arithmetic number, because the mean of its divisors is an integer number (835988274).

Almost surely, 2^1671976547 is an apocalyptic number.

1671976547 is a deficient number, since it is larger than the sum of its proper divisors (1).

1671976547 is an equidigital number, since it uses as much as digits as its factorization.

1671976547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2222640, while the sum is 53.

The square root of 1671976547 is about 40889.8098185844. The cubic root of 1671976547 is about 1186.8888785654. Note that the first 4 decimals are identical.

The spelling of 1671976547 in words is "one billion, six hundred seventy-one million, nine hundred seventy-six thousand, five hundred forty-seven".