197398211418 has 24 divisors (see below), whose sum is σ = 427843567008. Its totient is φ = 65776720392.

The previous prime is 197398211411. The next prime is 197398211419. The reversal of 197398211418 is 814112893791.

197398211418 is a `hidden beast` number, since 1 + 9 + 7 + 3 + 9 + 8 + 211 + 418 = 666.

It is not an unprimeable number, because it can be changed into a prime (197398211411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1836580 + ... + 1941087.

It is an arithmetic number, because the mean of its divisors is an integer number (17826815292).

Almost surely, 2^197398211418 is an apocalyptic number.

197398211418 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

197398211418 is an abundant number, since it is smaller than the sum of its proper divisors (230445355590).

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

197398211418 is a wasteful number, since it uses less digits than its factorization.

197398211418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3780578 (or 3780575 counting only the distinct ones).

The product of its digits is 870912, while the sum is 54.

The spelling of 197398211418 in words is "one hundred ninety-seven billion, three hundred ninety-eight million, two hundred eleven thousand, four hundred eighteen".