1672791667 has 2 divisors, whose sum is σ = 1672791668. Its totient is φ = 1672791666.

The previous prime is 1672791661. The next prime is 1672791691. The reversal of 1672791667 is 7661972761.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1672791667 is a prime.

It is a super-2 number, since 2×1672791667² = 5596463922369277778, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1672791661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836395833 + 836395834.

It is an arithmetic number, because the mean of its divisors is an integer number (836395834).

Almost surely, 2^1672791667 is an apocalyptic number.

1672791667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1672791667 is an equidigital number, since it uses as much as digits as its factorization.

1672791667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1333584, while the sum is 52.

The square root of 1672791667 is about 40899.7758795815. The cubic root of 1672791667 is about 1187.0817241108.

The spelling of 1672791667 in words is "one billion, six hundred seventy-two million, seven hundred ninety-one thousand, six hundred sixty-seven".