196258647090 has 48 divisors (see below), whose sum is σ = 517733564544. Its totient is φ = 47577852960.

The previous prime is 196258647059. The next prime is 196258647103. The reversal of 196258647090 is 90746852691.

It is a self number, because there is not a number n which added to its sum of digits gives 196258647090.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27029242 + ... + 27036501.

It is an arithmetic number, because the mean of its divisors is an integer number (10786115928).

Almost surely, 2^196258647090 is an apocalyptic number.

196258647090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

196258647090 is an abundant number, since it is smaller than the sum of its proper divisors (321474917454).

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

196258647090 is a wasteful number, since it uses less digits than its factorization.

196258647090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54065775 (or 54065764 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 57.

It can be divided in two parts, 196258 and 647090, that added together give a palindrome (843348).

The spelling of 196258647090 in words is "one hundred ninety-six billion, two hundred fifty-eight million, six hundred forty-seven thousand, ninety".