197542790 has 16 divisors (see below), whose sum is σ = 355743360. Its totient is φ = 78980160.

The previous prime is 197542777. The next prime is 197542801. The reversal of 197542790 is 97245791.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30650 + ... + 36530.

It is an arithmetic number, because the mean of its divisors is an integer number (22233960).

Almost surely, 2^197542790 is an apocalyptic number.

197542790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197542790 is a deficient number, since it is larger than the sum of its proper divisors (158200570).

197542790 is a wasteful number, since it uses less digits than its factorization.

197542790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9247.

The product of its (nonzero) digits is 158760, while the sum is 44.

The square root of 197542790 is about 14054.9916399833. The cubic root of 197542790 is about 582.3986966716.

The spelling of 197542790 in words is "one hundred ninety-seven million, five hundred forty-two thousand, seven hundred ninety".