1866800151836 has 12 divisors (see below), whose sum is σ = 3270685787712. Its totient is φ = 932318498208.

The previous prime is 1866800151833. The next prime is 1866800151889. The reversal of 1866800151836 is 6381510086681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1866800151833) 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, 270390545 + ... + 270397448.

It is an arithmetic number, because the mean of its divisors is an integer number (272557148976).

Almost surely, 2^{1866800151836} is an apocalyptic number.

It is an amenable number.

1866800151836 is a deficient number, since it is larger than the sum of its proper divisors (1403885635876).

1866800151836 is a wasteful number, since it uses less digits than its factorization.

1866800151836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540788860 (or 540788858 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 53.

The spelling of 1866800151836 in words is "one trillion, eight hundred sixty-six billion, eight hundred million, one hundred fifty-one thousand, eight hundred thirty-six".