1896918995838 has 8 divisors (see below), whose sum is σ = 3793837991688. Its totient is φ = 632306331944.

The previous prime is 1896918995837. The next prime is 1896918995863. The reversal of 1896918995838 is 8385998196981.

It is a sphenic number, since it is the product of 3 distinct primes.

1896918995838 is an admirable number.

It is a super-2 number, since 2×1896918995838² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1896918995837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158076582981 + ... + 158076582992.

It is an arithmetic number, because the mean of its divisors is an integer number (474229748961).

Almost surely, 2^{1896918995838} is an apocalyptic number.

1896918995838 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1896918995838 is a wasteful number, since it uses less digits than its factorization.

1896918995838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316153165978.

The product of its digits is 2418647040, while the sum is 84.

The spelling of 1896918995838 in words is "one trillion, eight hundred ninety-six billion, nine hundred eighteen million, nine hundred ninety-five thousand, eight hundred thirty-eight".