1372671161 has 2 divisors, whose sum is σ = 1372671162. Its totient is φ = 1372671160.

The previous prime is 1372671151. The next prime is 1372671163. The reversal of 1372671161 is 1611762731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1364859136 + 7812025 = 36944^2 + 2795^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1372671161 is a prime.

It is a super-2 number, since 2×1372671161² = 3768452232482175842, which contains 22 as substring.

Together with 1372671163, 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 (1372671163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686335580 + 686335581.

It is an arithmetic number, because the mean of its divisors is an integer number (686335581).

Almost surely, 2^1372671161 is an apocalyptic number.

It is an amenable number.

1372671161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1372671161 is an equidigital number, since it uses as much as digits as its factorization.

1372671161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584, while the sum is 35.

The square root of 1372671161 is about 37049.5770691111. The cubic root of 1372671161 is about 1111.3618976020.

The spelling of 1372671161 in words is "one billion, three hundred seventy-two million, six hundred seventy-one thousand, one hundred sixty-one".