78232619 has 2 divisors, whose sum is σ = 78232620. Its totient is φ = 78232618.

The previous prime is 78232603. The next prime is 78232621. The reversal of 78232619 is 91623287.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78232619 - 2⁴ = 78232603 is a prime.

It is a super-2 number, since 2×78232619² = 12240685351198322, which contains 22 as substring.

Together with 78232621, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (78232639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39116309 + 39116310.

It is an arithmetic number, because the mean of its divisors is an integer number (39116310).

Almost surely, 2^78232619 is an apocalyptic number.

78232619 is a deficient number, since it is larger than the sum of its proper divisors (1).

78232619 is an equidigital number, since it uses as much as digits as its factorization.

78232619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 38.

The square root of 78232619 is about 8844.9205197107. The cubic root of 78232619 is about 427.6901908996.

The spelling of 78232619 in words is "seventy-eight million, two hundred thirty-two thousand, six hundred nineteen".