80149378 has 8 divisors (see below), whose sum is σ = 120371580. Its totient is φ = 40025520.

The previous prime is 80149369. The next prime is 80149379. The reversal of 80149378 is 87394108.

It can be written as a sum of positive squares in 2 ways, for example, as 76335169 + 3814209 = 8737^2 + 1953^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 80149378.

It is not an unprimeable number, because it can be changed into a prime (80149379) 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, 22513 + ... + 25828.

Almost surely, 2^80149378 is an apocalyptic number.

80149378 is a deficient number, since it is larger than the sum of its proper divisors (40222202).

80149378 is a wasteful number, since it uses less digits than its factorization.

80149378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49172.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 80149378 is about 8952.6184996346. The cubic root of 80149378 is about 431.1549588780.

The spelling of 80149378 in words is "eighty million, one hundred forty-nine thousand, three hundred seventy-eight".