18965660045 has 16 divisors (see below), whose sum is σ = 23759402112. Its totient is φ = 14506071360.

The previous prime is 18965660039. The next prime is 18965660057. The reversal of 18965660045 is 54006656981.

It is a happy number.

It is not a de Polignac number, because 18965660045 - 2⁶ = 18965659981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18965659975 and 18965660002.

It is a congruent number.

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, 215915 + ... + 290775.

It is an arithmetic number, because the mean of its divisors is an integer number (1484962632).

Almost surely, 2^18965660045 is an apocalyptic number.

It is an amenable number.

18965660045 is a deficient number, since it is larger than the sum of its proper divisors (4793742067).

18965660045 is a wasteful number, since it uses less digits than its factorization.

18965660045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77092.

The product of its (nonzero) digits is 1555200, while the sum is 50.

The spelling of 18965660045 in words is "eighteen billion, nine hundred sixty-five million, six hundred sixty thousand, forty-five".