423019191185 has 4 divisors (see below), whose sum is σ = 507623029428. Its totient is φ = 338415352944.

The previous prime is 423019191139. The next prime is 423019191197. The reversal of 423019191185 is 581191910324.

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

It can be written as a sum of positive squares in 2 ways, for example, as 57681148561 + 365338042624 = 240169^2 + 604432^2 .

It is a cyclic number.

It is not a de Polignac number, because 423019191185 - 2⁶ = 423019191121 is a prime.

It is a super-2 number, since 2×423019191185² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42301919114 + ... + 42301919123.

It is an arithmetic number, because the mean of its divisors is an integer number (126905757357).

Almost surely, 2^423019191185 is an apocalyptic number.

It is an amenable number.

423019191185 is a deficient number, since it is larger than the sum of its proper divisors (84603838243).

423019191185 is an equidigital number, since it uses as much as digits as its factorization.

423019191185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84603838242.

The product of its (nonzero) digits is 77760, while the sum is 44.

The spelling of 423019191185 in words is "four hundred twenty-three billion, nineteen million, one hundred ninety-one thousand, one hundred eighty-five".