1618043487 has 16 divisors (see below), whose sum is σ = 2248836480. Its totient is φ = 1033541600.

The previous prime is 1618043447. The next prime is 1618043549. The reversal of 1618043487 is 7843408161.

It is a cyclic number.

It is not a de Polignac number, because 1618043487 - 2⁶ = 1618043423 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1618043437) 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, 59589 + ... + 82382.

It is an arithmetic number, because the mean of its divisors is an integer number (140552280).

Almost surely, 2^1618043487 is an apocalyptic number.

1618043487 is a deficient number, since it is larger than the sum of its proper divisors (630792993).

1618043487 is a wasteful number, since it uses less digits than its factorization.

1618043487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142134.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 1618043487 is about 40224.9112739854. The cubic root of 1618043487 is about 1173.9872938926.

The spelling of 1618043487 in words is "one billion, six hundred eighteen million, forty-three thousand, four hundred eighty-seven".