1855352142808 has 16 divisors (see below), whose sum is σ = 3563633689560. Its totient is φ = 905049825600.

The previous prime is 1855352142799. The next prime is 1855352142823. The reversal of 1855352142808 is 8082412535581.

It is a happy number.

It is a super-2 number, since 2×1855352142808² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2828280378 + ... + 2828281033.

Almost surely, 2^{1855352142808} is an apocalyptic number.

It is an amenable number.

1855352142808 is a deficient number, since it is larger than the sum of its proper divisors (1708281546752).

1855352142808 is a wasteful number, since it uses less digits than its factorization.

1855352142808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5656561458 (or 5656561454 counting only the distinct ones).

The product of its (nonzero) digits is 3072000, while the sum is 52.

The spelling of 1855352142808 in words is "one trillion, eight hundred fifty-five billion, three hundred fifty-two million, one hundred forty-two thousand, eight hundred eight".