195087783642 has 16 divisors (see below), whose sum is σ = 390180605472. Its totient is φ = 65028421520.

The previous prime is 195087783617. The next prime is 195087783647. The reversal of 195087783642 is 246387780591.

It is not an unprimeable number, because it can be changed into a prime (195087783647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 455917 + ... + 773327.

It is an arithmetic number, because the mean of its divisors is an integer number (24386287842).

It is a 2-persistent number, because it is pandigital, and so is 2⋅195087783642 = 390175567284, but 3⋅195087783642 = 585263350926 is not.

Almost surely, 2^195087783642 is an apocalyptic number.

195087783642 is an abundant number, since it is smaller than the sum of its proper divisors (195092821830).

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

195087783642 is a wasteful number, since it uses less digits than its factorization.

195087783642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419853.

The product of its (nonzero) digits is 20321280, while the sum is 60.

The spelling of 195087783642 in words is "one hundred ninety-five billion, eighty-seven million, seven hundred eighty-three thousand, six hundred forty-two".