1866234418240 has 112 divisors (see below), whose sum is σ = 4750289712000. Its totient is φ = 696621854720.

The previous prime is 1866234418219. The next prime is 1866234418249. The reversal of 1866234418240 is 428144326681.

It is a super-4 number, since 4×1866234418240⁴ (a number of 50 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (1866234418249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2790490 + ... + 3394009.

It is an arithmetic number, because the mean of its divisors is an integer number (42413301000).

Almost surely, 2^{1866234418240} is an apocalyptic number.

1866234418240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1866234418240 is an abundant number, since it is smaller than the sum of its proper divisors (2884055293760).

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

1866234418240 is a wasteful number, since it uses less digits than its factorization.

1866234418240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6184580 (or 6184570 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 49.

The spelling of 1866234418240 in words is "one trillion, eight hundred sixty-six billion, two hundred thirty-four million, four hundred eighteen thousand, two hundred forty".