196657149874890 has 64 divisors (see below), whose sum is σ = 480710101848192. Its totient is φ = 51478389043200.

The previous prime is 196657149874879. The next prime is 196657149874897. The reversal of 196657149874890 is 98478941756691.

It is not an unprimeable number, because it can be changed into a prime (196657149874897) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212328871 + ... + 213253050.

It is an arithmetic number, because the mean of its divisors is an integer number (7511095341378).

Almost surely, 2^{196657149874890} is an apocalyptic number.

196657149874890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

196657149874890 is an abundant number, since it is smaller than the sum of its proper divisors (284052951973302).

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

196657149874890 is a wasteful number, since it uses less digits than its factorization.

196657149874890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425582215.

The product of its (nonzero) digits is 6584094720, while the sum is 84.

The spelling of 196657149874890 in words is "one hundred ninety-six trillion, six hundred fifty-seven billion, one hundred forty-nine million, eight hundred seventy-four thousand, eight hundred ninety".