1672958909 has 2 divisors, whose sum is σ = 1672958910. Its totient is φ = 1672958908.

The previous prime is 1672958887. The next prime is 1672958999. The reversal of 1672958909 is 9098592761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1224790009 + 448168900 = 34997^2 + 21170^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1672958909 is a prime.

It is a super-2 number, since 2×1672958909² = 5597583022404940562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1672958999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836479454 + 836479455.

It is an arithmetic number, because the mean of its divisors is an integer number (836479455).

Almost surely, 2^1672958909 is an apocalyptic number.

It is an amenable number.

1672958909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1672958909 is an equidigital number, since it uses as much as digits as its factorization.

1672958909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2449440, while the sum is 56.

The square root of 1672958909 is about 40901.8203629129. The cubic root of 1672958909 is about 1187.1212833916.

The spelling of 1672958909 in words is "one billion, six hundred seventy-two million, nine hundred fifty-eight thousand, nine hundred nine".