80161493 has 4 divisors (see below), whose sum is σ = 81674028. Its totient is φ = 78648960.

The previous prime is 80161451. The next prime is 80161561. The reversal of 80161493 is 39416108.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20052484 + 60109009 = 4478^2 + 7753^2 .

It is a cyclic number.

It is not a de Polignac number, because 80161493 - 2⁶ = 80161429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80161793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 756188 + ... + 756293.

It is an arithmetic number, because the mean of its divisors is an integer number (20418507).

Almost surely, 2^80161493 is an apocalyptic number.

It is an amenable number.

80161493 is a deficient number, since it is larger than the sum of its proper divisors (1512535).

80161493 is a wasteful number, since it uses less digits than its factorization.

80161493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512534.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 80161493 is about 8953.2950917525. The cubic root of 80161493 is about 431.1766815634.

The spelling of 80161493 in words is "eighty million, one hundred sixty-one thousand, four hundred ninety-three".