1672872361 has 2 divisors, whose sum is σ = 1672872362. Its totient is φ = 1672872360.

The previous prime is 1672872343. The next prime is 1672872373. The reversal of 1672872361 is 1632782761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1508545600 + 164326761 = 38840^2 + 12819^2 .

It is a cyclic number.

It is not a de Polignac number, because 1672872361 - 2¹¹ = 1672870313 is a prime.

It is not a weakly prime, because it can be changed into another prime (1672873361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836436180 + 836436181.

It is an arithmetic number, because the mean of its divisors is an integer number (836436181).

Almost surely, 2^1672872361 is an apocalyptic number.

It is an amenable number.

1672872361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1672872361 is an equidigital number, since it uses as much as digits as its factorization.

1672872361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 43.

The square root of 1672872361 is about 40900.7623523083. The cubic root of 1672872361 is about 1187.1008117303.

The spelling of 1672872361 in words is "one billion, six hundred seventy-two million, eight hundred seventy-two thousand, three hundred sixty-one".