195218540 has 48 divisors (see below), whose sum is σ = 470776320. Its totient is φ = 67250880.

The previous prime is 195218539. The next prime is 195218567. The reversal of 195218540 is 45812591.

195218540 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-2 number, since 2×195218540² = 76220556719463200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 195218540.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19172 + ... + 27531.

It is an arithmetic number, because the mean of its divisors is an integer number (9807840).

Almost surely, 2^195218540 is an apocalyptic number.

195218540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195218540 is an abundant number, since it is smaller than the sum of its proper divisors (275557780).

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

195218540 is a wasteful number, since it uses less digits than its factorization.

195218540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46742 (or 46740 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 35.

The square root of 195218540 is about 13972.0628398243. The cubic root of 195218540 is about 580.1055495581.

The spelling of 195218540 in words is "one hundred ninety-five million, two hundred eighteen thousand, five hundred forty".