1900195889396 has 48 divisors (see below), whose sum is σ = 4074880320000. Its totient is φ = 756763458048.

The previous prime is 1900195889393. The next prime is 1900195889407. The reversal of 1900195889396 is 6939885910091.

It is a super-2 number, since 2×1900195889396² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (68).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1900195889393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25228271 + ... + 25303478.

It is an arithmetic number, because the mean of its divisors is an integer number (84893340000).

Almost surely, 2^{1900195889396} is an apocalyptic number.

It is an amenable number.

1900195889396 is an abundant number, since it is smaller than the sum of its proper divisors (2174684430604).

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

1900195889396 is a wasteful number, since it uses less digits than its factorization.

1900195889396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50531856 (or 50531854 counting only the distinct ones).

The product of its (nonzero) digits is 37791360, while the sum is 68.

The spelling of 1900195889396 in words is "one trillion, nine hundred billion, one hundred ninety-five million, eight hundred eighty-nine thousand, three hundred ninety-six".