80638149 has 4 divisors (see below), whose sum is σ = 107517536. Its totient is φ = 53758764.

The previous prime is 80638141. The next prime is 80638153. The reversal of 80638149 is 94183608.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 80638149 - 2³ = 80638141 is a prime.

It is a super-2 number, since 2×80638149² = 13005022148292402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80638141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13439689 + ... + 13439694.

It is an arithmetic number, because the mean of its divisors is an integer number (26879384).

Almost surely, 2^80638149 is an apocalyptic number.

It is an amenable number.

80638149 is a deficient number, since it is larger than the sum of its proper divisors (26879387).

80638149 is a wasteful number, since it uses less digits than its factorization.

80638149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26879386.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 80638149 is about 8979.8746650496. The cubic root of 80638149 is about 432.0296136678.

The spelling of 80638149 in words is "eighty million, six hundred thirty-eight thousand, one hundred forty-nine".