1866145024 has 72 divisors (see below), whose sum is σ = 3845074688. Its totient is φ = 903260160.

The previous prime is 1866145009. The next prime is 1866145027. The reversal of 1866145024 is 4205416681.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1866145027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2566549 + ... + 2567275.

Almost surely, 2^1866145024 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1866145024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1922537344).

1866145024 is an abundant number, since it is smaller than the sum of its proper divisors (1978929664).

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

1866145024 is an equidigital number, since it uses as much as digits as its factorization.

1866145024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051 (or 1037 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 1866145024 is about 43198.9007267546. The cubic root of 1866145024 is about 1231.1617956208.

The spelling of 1866145024 in words is "one billion, eight hundred sixty-six million, one hundred forty-five thousand, twenty-four".