194445103858 has 4 divisors (see below), whose sum is σ = 291667655790. Its totient is φ = 97222551928.

The previous prime is 194445103847. The next prime is 194445103861. The reversal of 194445103858 is 858301544491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 858301544491 = 229 ⋅3748041679.

It can be written as a sum of positive squares in only one way, i.e., 142322844049 + 52122259809 = 377257^2 + 228303^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48611275963 + ... + 48611275966.

Almost surely, 2^194445103858 is an apocalyptic number.

194445103858 is a deficient number, since it is larger than the sum of its proper divisors (97222551932).

194445103858 is an equidigital number, since it uses as much as digits as its factorization.

194445103858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97222551931.

The product of its (nonzero) digits is 2764800, while the sum is 52.

The spelling of 194445103858 in words is "one hundred ninety-four billion, four hundred forty-five million, one hundred three thousand, eight hundred fifty-eight".