1851668518352 has 20 divisors (see below), whose sum is σ = 3776429215680. Its totient is φ = 877106140128.

The previous prime is 1851668518321. The next prime is 1851668518369. The reversal of 1851668518352 is 2538158661581.

It is a junction number, because it is equal to n+sod(n) for n = 1851668518291 and 1851668518300.

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, 3045507128 + ... + 3045507735.

It is an arithmetic number, because the mean of its divisors is an integer number (188821460784).

Almost surely, 2^{1851668518352} is an apocalyptic number.

It is an amenable number.

1851668518352 is an abundant number, since it is smaller than the sum of its proper divisors (1924760697328).

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

1851668518352 is a wasteful number, since it uses less digits than its factorization.

1851668518352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6091014890 (or 6091014884 counting only the distinct ones).

The product of its digits is 13824000, while the sum is 59.

The spelling of 1851668518352 in words is "one trillion, eight hundred fifty-one billion, six hundred sixty-eight million, five hundred eighteen thousand, three hundred fifty-two".