78160361 has 2 divisors, whose sum is σ = 78160362. Its totient is φ = 78160360.

The previous prime is 78160343. The next prime is 78160363. The reversal of 78160361 is 16306187.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72777961 + 5382400 = 8531^2 + 2320^2 .

It is an emirp because it is prime and its reverse (16306187) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78160361 - 2¹⁴ = 78143977 is a prime.

It is a super-2 number, since 2×78160361² = 12218084063300642, which contains 22 as substring.

Together with 78160363, 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 (78160363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39080180 + 39080181.

It is an arithmetic number, because the mean of its divisors is an integer number (39080181).

Almost surely, 2^78160361 is an apocalyptic number.

It is an amenable number.

78160361 is a deficient number, since it is larger than the sum of its proper divisors (1).

78160361 is an equidigital number, since it uses as much as digits as its factorization.

78160361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 78160361 is about 8840.8348587676. The cubic root of 78160361 is about 427.5584744974.

The spelling of 78160361 in words is "seventy-eight million, one hundred sixty thousand, three hundred sixty-one".