80149005 has 12 divisors (see below), whose sum is σ = 138925020. Its totient is φ = 42746112.

The previous prime is 80148949. The next prime is 80149007. The reversal of 80149005 is 50094108.

It can be written as a sum of positive squares in 2 ways, for example, as 49744809 + 30404196 = 7053^2 + 5514^2 .

It is not a de Polignac number, because 80149005 - 2⁷ = 80148877 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 80149005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80149007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 890500 + ... + 890589.

It is an arithmetic number, because the mean of its divisors is an integer number (11577085).

Almost surely, 2^80149005 is an apocalyptic number.

It is an amenable number.

80149005 is a deficient number, since it is larger than the sum of its proper divisors (58776015).

80149005 is a wasteful number, since it uses less digits than its factorization.

80149005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1781100 (or 1781097 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 80149005 is about 8952.5976677163. The cubic root of 80149005 is about 431.1542900392.

The spelling of 80149005 in words is "eighty million, one hundred forty-nine thousand, five".