1940195737218 has 16 divisors (see below), whose sum is σ = 3882124592640. Its totient is φ = 646443059376.

The previous prime is 1940195737141. The next prime is 1940195737247. The reversal of 1940195737218 is 8127375910491.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72198705 + ... + 72225572.

It is an arithmetic number, because the mean of its divisors is an integer number (242632787040).

Almost surely, 2^{1940195737218} is an apocalyptic number.

1940195737218 is an abundant number, since it is smaller than the sum of its proper divisors (1941928855422).

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

1940195737218 is a wasteful number, since it uses less digits than its factorization.

1940195737218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144426521.

The product of its (nonzero) digits is 3810240, while the sum is 57.

The spelling of 1940195737218 in words is "one trillion, nine hundred forty billion, one hundred ninety-five million, seven hundred thirty-seven thousand, two hundred eighteen".