78495031 has 2 divisors, whose sum is σ = 78495032. Its totient is φ = 78495030.

The previous prime is 78494987. The next prime is 78495037. The reversal of 78495031 is 13059487.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78495031 - 2⁷ = 78494903 is a prime.

It is a super-2 number, since 2×78495031² = 12322939783381922, which contains 22 as substring.

It is equal to p_4586644 and since 78495031 and 4586644 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78495037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39247515 + 39247516.

It is an arithmetic number, because the mean of its divisors is an integer number (39247516).

Almost surely, 2^78495031 is an apocalyptic number.

78495031 is a deficient number, since it is larger than the sum of its proper divisors (1).

78495031 is an equidigital number, since it uses as much as digits as its factorization.

78495031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 78495031 is about 8859.7421520042. The cubic root of 78495031 is about 428.1678509403.

It can be divided in two parts, 7849 and 5031, that added together give a triangular number (12880 = T₁₆₀).

The spelling of 78495031 in words is "seventy-eight million, four hundred ninety-five thousand, thirty-one".