197918054 has 4 divisors (see below), whose sum is σ = 296877084. Its totient is φ = 98959026.

The previous prime is 197918053. The next prime is 197918089. The reversal of 197918054 is 450819791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 450819791 = 1531 ⋅294461.

It is a junction number, because it is equal to n+sod(n) for n = 197917996 and 197918014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197918053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49479512 + ... + 49479515.

It is an arithmetic number, because the mean of its divisors is an integer number (74219271).

Almost surely, 2^197918054 is an apocalyptic number.

197918054 is a deficient number, since it is larger than the sum of its proper divisors (98959030).

197918054 is an equidigital number, since it uses as much as digits as its factorization.

197918054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98959029.

The product of its (nonzero) digits is 90720, while the sum is 44.

The square root of 197918054 is about 14068.3351538126. The cubic root of 197918054 is about 582.7672497635.

The spelling of 197918054 in words is "one hundred ninety-seven million, nine hundred eighteen thousand, fifty-four".