195354411890 has 64 divisors (see below), whose sum is σ = 399522233088. Its totient is φ = 68144428800.

The previous prime is 195354411827. The next prime is 195354411911. The reversal of 195354411890 is 98114453591.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49049 + ... + 626988.

It is an arithmetic number, because the mean of its divisors is an integer number (6242534892).

Almost surely, 2^195354411890 is an apocalyptic number.

195354411890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

195354411890 is an abundant number, since it is smaller than the sum of its proper divisors (204167821198).

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

195354411890 is a wasteful number, since it uses less digits than its factorization.

195354411890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676163.

The product of its (nonzero) digits is 777600, while the sum is 50.

The spelling of 195354411890 in words is "one hundred ninety-five billion, three hundred fifty-four million, four hundred eleven thousand, eight hundred ninety".