167428636819 has 2 divisors, whose sum is σ = 167428636820. Its totient is φ = 167428636818.

The previous prime is 167428636783. The next prime is 167428636867. The reversal of 167428636819 is 918636824761.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 167428636819 - 2⁷ = 167428636691 is a prime.

It is a super-2 number, since 2×167428636819² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (167428636019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83714318409 + 83714318410.

It is an arithmetic number, because the mean of its divisors is an integer number (83714318410).

Almost surely, 2^167428636819 is an apocalyptic number.

167428636819 is a deficient number, since it is larger than the sum of its proper divisors (1).

167428636819 is an equidigital number, since it uses as much as digits as its factorization.

167428636819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20901888, while the sum is 61.

The spelling of 167428636819 in words is "one hundred sixty-seven billion, four hundred twenty-eight million, six hundred thirty-six thousand, eight hundred nineteen".