2187533645 has 8 divisors (see below), whose sum is σ = 2863680480. Its totient is φ = 1590933520.

The previous prime is 2187533617. The next prime is 2187533651. The reversal of 2187533645 is 5463357812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2187533645 - 2¹⁴ = 2187517261 is a prime.

It is a super-3 number, since 3×2187533645³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2187533596 and 2187533605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19886615 + ... + 19886724.

It is an arithmetic number, because the mean of its divisors is an integer number (357960060).

Almost surely, 2^2187533645 is an apocalyptic number.

It is an amenable number.

2187533645 is a deficient number, since it is larger than the sum of its proper divisors (676146835).

2187533645 is a wasteful number, since it uses less digits than its factorization.

2187533645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39773355.

The product of its digits is 604800, while the sum is 44.

The square root of 2187533645 is about 46771.0770134706. The cubic root of 2187533645 is about 1298.1301807225.

The spelling of 2187533645 in words is "two billion, one hundred eighty-seven million, five hundred thirty-three thousand, six hundred forty-five".