80761189 has 2 divisors, whose sum is σ = 80761190. Its totient is φ = 80761188.

The previous prime is 80761171. The next prime is 80761193. The reversal of 80761189 is 98116708.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59213025 + 21548164 = 7695^2 + 4642^2 .

It is a cyclic number.

It is not a de Polignac number, because 80761189 - 2¹⁵ = 80728421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80761159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40380594 + 40380595.

It is an arithmetic number, because the mean of its divisors is an integer number (40380595).

Almost surely, 2^80761189 is an apocalyptic number.

It is an amenable number.

80761189 is a deficient number, since it is larger than the sum of its proper divisors (1).

80761189 is an equidigital number, since it uses as much as digits as its factorization.

80761189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 80761189 is about 8986.7229288545. The cubic root of 80761189 is about 432.2492363944.

The spelling of 80761189 in words is "eighty million, seven hundred sixty-one thousand, one hundred eighty-nine".