78796019 has 2 divisors, whose sum is σ = 78796020. Its totient is φ = 78796018.

The previous prime is 78796009. The next prime is 78796033. The reversal of 78796019 is 91069787.

It is a weak prime.

It is an emirp because it is prime and its reverse (91069787) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78796019 is a prime.

It is a super-2 number, since 2×78796019² = 12417625220496722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (78796009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39398009 + 39398010.

It is an arithmetic number, because the mean of its divisors is an integer number (39398010).

Almost surely, 2^78796019 is an apocalyptic number.

78796019 is a deficient number, since it is larger than the sum of its proper divisors (1).

78796019 is an equidigital number, since it uses as much as digits as its factorization.

78796019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 47.

The square root of 78796019 is about 8876.7121728712. The cubic root of 78796019 is about 428.7144206296.

The spelling of 78796019 in words is "seventy-eight million, seven hundred ninety-six thousand, nineteen".