197491842 has 24 divisors (see below), whose sum is σ = 429287040. Its totient is φ = 65617080.

The previous prime is 197491807. The next prime is 197491849. The reversal of 197491842 is 248194791.

It is a happy number.

197491842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (197491849) 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, 12042 + ... + 23237.

It is an arithmetic number, because the mean of its divisors is an integer number (17886960).

Almost surely, 2^197491842 is an apocalyptic number.

197491842 is an abundant number, since it is smaller than the sum of its proper divisors (231795198).

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

197491842 is a wasteful number, since it uses less digits than its factorization.

197491842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35598 (or 35595 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 197491842 is about 14053.1790709433. The cubic root of 197491842 is about 582.3486238071.

The spelling of 197491842 in words is "one hundred ninety-seven million, four hundred ninety-one thousand, eight hundred forty-two".