1942889718164 has 12 divisors (see below), whose sum is σ = 3400068443604. Its totient is φ = 971441591424.

The previous prime is 1942889718139. The next prime is 1942889718199. The reversal of 1942889718164 is 4618179882491.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1260792122500 + 682097595664 = 1122850^2 + 825892^2 .

It is a super-3 number, since 3×1942889718164³ (a number of 38 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1942889718094 and 1942889718103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 941402 + ... + 2184494.

It is an arithmetic number, because the mean of its divisors is an integer number (283339036967).

Almost surely, 2^{1942889718164} is an apocalyptic number.

It is an amenable number.

1942889718164 is a deficient number, since it is larger than the sum of its proper divisors (1457178725440).

1942889718164 is a wasteful number, since it uses less digits than its factorization.

1942889718164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633834 (or 1633832 counting only the distinct ones).

The product of its digits is 55738368, while the sum is 68.

The spelling of 1942889718164 in words is "one trillion, nine hundred forty-two billion, eight hundred eighty-nine million, seven hundred eighteen thousand, one hundred sixty-four".