1672655009 has 2 divisors, whose sum is σ = 1672655010. Its totient is φ = 1672655008.

The previous prime is 1672654999. The next prime is 1672655027. The reversal of 1672655009 is 9005562761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1639845025 + 32809984 = 40495^2 + 5728^2 .

It is a cyclic number.

It is not a de Polignac number, because 1672655009 - 2⁴ = 1672654993 is a prime.

It is not a weakly prime, because it can be changed into another prime (1672655609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836327504 + 836327505.

It is an arithmetic number, because the mean of its divisors is an integer number (836327505).

Almost surely, 2^1672655009 is an apocalyptic number.

It is an amenable number.

1672655009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1672655009 is an equidigital number, since it uses as much as digits as its factorization.

1672655009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 1672655009 is about 40898.1052006080. The cubic root of 1672655009 is about 1187.0493971859.

The spelling of 1672655009 in words is "one billion, six hundred seventy-two million, six hundred fifty-five thousand, nine".