1866853337000 has 64 divisors (see below), whose sum is σ = 4519072630800. Its totient is φ = 720991622400.

The previous prime is 1866853336987. The next prime is 1866853337047. The reversal of 1866853337000 is 7333586681.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1864339684 + 1864988997316 = 43178^2 + 1365646^2 .

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a self number, because there is not a number n which added to its sum of digits gives 1866853337000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32158127 + ... + 32216126.

Almost surely, 2^{1866853337000} is an apocalyptic number.

1866853337000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1866853337000 is an abundant number, since it is smaller than the sum of its proper divisors (2652219293800).

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

1866853337000 is a wasteful number, since it uses less digits than its factorization.

1866853337000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64374303 (or 64374289 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 1866853337000 in words is "one trillion, eight hundred sixty-six billion, eight hundred fifty-three million, three hundred thirty-seven thousand".