3671856971 has 2 divisors, whose sum is σ = 3671856972. Its totient is φ = 3671856970.

The previous prime is 3671856931. The next prime is 3671856973. The reversal of 3671856971 is 1796581763.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3671856971 - 2¹⁰ = 3671855947 is a prime.

Together with 3671856973, 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 (3671856973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1835928485 + 1835928486.

It is an arithmetic number, because the mean of its divisors is an integer number (1835928486).

Almost surely, 2^3671856971 is an apocalyptic number.

3671856971 is a deficient number, since it is larger than the sum of its proper divisors (1).

3671856971 is an equidigital number, since it uses as much as digits as its factorization.

3671856971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 53.

The square root of 3671856971 is about 60595.8494535723. The cubic root of 3671856971 is about 1542.7489232070.

The spelling of 3671856971 in words is "three billion, six hundred seventy-one million, eight hundred fifty-six thousand, nine hundred seventy-one".