1672450081 has 2 divisors, whose sum is σ = 1672450082. Its totient is φ = 1672450080.

The previous prime is 1672450067. The next prime is 1672450121. The reversal of 1672450081 is 1800542761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1665374481 + 7075600 = 40809^2 + 2660^2 .

It is a cyclic number.

It is not a de Polignac number, because 1672450081 - 2¹³ = 1672441889 is a prime.

It is a super-2 number, since 2×1672450081² = 5594178546873813122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1672459081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836225040 + 836225041.

It is an arithmetic number, because the mean of its divisors is an integer number (836225041).

Almost surely, 2^1672450081 is an apocalyptic number.

It is an amenable number.

1672450081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1672450081 is an equidigital number, since it uses as much as digits as its factorization.

1672450081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 1672450081 is about 40895.5997755260. The cubic root of 1672450081 is about 1187.0009174550. Note that the first 3 decimals are identical.

The spelling of 1672450081 in words is "one billion, six hundred seventy-two million, four hundred fifty thousand, eighty-one".