197806771974 has 32 divisors (see below), whose sum is σ = 463157323776. Its totient is φ = 55137775680.

The previous prime is 197806771957. The next prime is 197806771979. The reversal of 197806771974 is 479177608791.

197806771974 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×197806771974³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197806771979) 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 in 15 ways as a sum of consecutive naturals, for example, 57433462 + ... + 57436905.

It is an arithmetic number, because the mean of its divisors is an integer number (14473666368).

Almost surely, 2^197806771974 is an apocalyptic number.

197806771974 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

197806771974 is an abundant number, since it is smaller than the sum of its proper divisors (265350551802).

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

197806771974 is a wasteful number, since it uses less digits than its factorization.

197806771974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114870420.

The product of its (nonzero) digits is 37340352, while the sum is 66.

The spelling of 197806771974 in words is "one hundred ninety-seven billion, eight hundred six million, seven hundred seventy-one thousand, nine hundred seventy-four".