1672271197 has 2 divisors, whose sum is σ = 1672271198. Its totient is φ = 1672271196.

The previous prime is 1672271177. The next prime is 1672271207. The reversal of 1672271197 is 7911722761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1569268996 + 103002201 = 39614^2 + 10149^2 .

It is a cyclic number.

It is not a de Polignac number, because 1672271197 - 2²³ = 1663882589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1672271177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836135598 + 836135599.

It is an arithmetic number, because the mean of its divisors is an integer number (836135599).

Almost surely, 2^1672271197 is an apocalyptic number.

It is an amenable number.

1672271197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1672271197 is an equidigital number, since it uses as much as digits as its factorization.

1672271197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 74088, while the sum is 43.

The square root of 1672271197 is about 40893.4126357779. The cubic root of 1672271197 is about 1186.9585957049.

The spelling of 1672271197 in words is "one billion, six hundred seventy-two million, two hundred seventy-one thousand, one hundred ninety-seven".