78031849 has 8 divisors (see below), whose sum is σ = 89727680. Its totient is φ = 66473136.

The previous prime is 78031843. The next prime is 78031903. The reversal of 78031849 is 94813087.

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

It is a cyclic number.

It is not a de Polignac number, because 78031849 - 2⁹ = 78031337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78031843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33054 + ... + 35335.

It is an arithmetic number, because the mean of its divisors is an integer number (11215960).

Almost surely, 2^78031849 is an apocalyptic number.

It is an amenable number.

78031849 is a deficient number, since it is larger than the sum of its proper divisors (11695831).

78031849 is a wasteful number, since it uses less digits than its factorization.

78031849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68559.

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

The square root of 78031849 is about 8833.5637768683. The cubic root of 78031849 is about 427.3240140626.

The spelling of 78031849 in words is "seventy-eight million, thirty-one thousand, eight hundred forty-nine".