78194013 has 8 divisors (see below), whose sum is σ = 104483808. Its totient is φ = 52016784.

The previous prime is 78193993. The next prime is 78194029. The reversal of 78194013 is 31049187.

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

It is not a de Polignac number, because 78194013 - 2⁵ = 78193981 is a prime.

It is a super-2 number, since 2×78194013² = 12228607338088338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78194113) 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 7 ways as a sum of consecutive naturals, for example, 26506 + ... + 29307.

It is an arithmetic number, because the mean of its divisors is an integer number (13060476).

Almost surely, 2^78194013 is an apocalyptic number.

It is an amenable number.

78194013 is a deficient number, since it is larger than the sum of its proper divisors (26289795).

78194013 is a wasteful number, since it uses less digits than its factorization.

78194013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56283.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 78194013 is about 8842.7378678778. The cubic root of 78194013 is about 427.6198275632.

The spelling of 78194013 in words is "seventy-eight million, one hundred ninety-four thousand, thirteen".