193006668618 has 24 divisors (see below), whose sum is σ = 433669305888. Its totient is φ = 64335556044.

The previous prime is 193006668511. The next prime is 193006668677. The reversal of 193006668618 is 816866600391.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 198566046 + ... + 198567017.

It is an arithmetic number, because the mean of its divisors is an integer number (18069554412).

Almost surely, 2^193006668618 is an apocalyptic number.

193006668618 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

193006668618 is an abundant number, since it is smaller than the sum of its proper divisors (240662637270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

193006668618 is an equidigital number, since it uses as much as digits as its factorization.

193006668618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397133080 (or 397133068 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The spelling of 193006668618 in words is "one hundred ninety-three billion, six million, six hundred sixty-eight thousand, six hundred eighteen".