197491954 has 8 divisors (see below), whose sum is σ = 323168688. Its totient is φ = 89769060.

The previous prime is 197491919. The next prime is 197491963. The reversal of 197491954 is 459194791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 197491898 and 197491907.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4488432 + ... + 4488475.

It is an arithmetic number, because the mean of its divisors is an integer number (40396086).

Almost surely, 2^197491954 is an apocalyptic number.

197491954 is a deficient number, since it is larger than the sum of its proper divisors (125676734).

197491954 is a wasteful number, since it uses less digits than its factorization.

197491954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8976920.

The product of its digits is 408240, while the sum is 49.

The square root of 197491954 is about 14053.1830558063. The cubic root of 197491954 is about 582.3487338927.

The spelling of 197491954 in words is "one hundred ninety-seven million, four hundred ninety-one thousand, nine hundred fifty-four".