78148079 has 4 divisors (see below), whose sum is σ = 78599976. Its totient is φ = 77696184.

The previous prime is 78148073. The next prime is 78148093. The reversal of 78148079 is 97084187.

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

It is a cyclic number.

It is not a de Polignac number, because 78148079 - 2¹² = 78143983 is a prime.

It is a super-2 number, since 2×78148079² = 12214244502780482, 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 (78148073) 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, 225689 + ... + 226034.

It is an arithmetic number, because the mean of its divisors is an integer number (19649994).

Almost surely, 2^78148079 is an apocalyptic number.

78148079 is a deficient number, since it is larger than the sum of its proper divisors (451897).

78148079 is a wasteful number, since it uses less digits than its factorization.

78148079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451896.

The product of its (nonzero) digits is 112896, while the sum is 44.

The square root of 78148079 is about 8840.1402138201. The cubic root of 78148079 is about 427.5360780286.

The spelling of 78148079 in words is "seventy-eight million, one hundred forty-eight thousand, seventy-nine".