146636819 has 4 divisors (see below), whose sum is σ = 167584944. Its totient is φ = 125688696.

The previous prime is 146636807. The next prime is 146636821. The reversal of 146636819 is 918636641.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 146636819 - 2¹² = 146632723 is a prime.

It is a super-2 number, since 2×146636819² = 43004713372877522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 146636819.

It is not an unprimeable number, because it can be changed into a prime (146636839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10474052 + ... + 10474065.

It is an arithmetic number, because the mean of its divisors is an integer number (41896236).

Almost surely, 2^146636819 is an apocalyptic number.

146636819 is a deficient number, since it is larger than the sum of its proper divisors (20948125).

146636819 is an equidigital number, since it uses as much as digits as its factorization.

146636819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20948124.

The product of its digits is 186624, while the sum is 44.

The square root of 146636819 is about 12109.3690587082. The cubic root of 146636819 is about 527.3282164146.

The spelling of 146636819 in words is "one hundred forty-six million, six hundred thirty-six thousand, eight hundred nineteen".