1609664733087 has 4 divisors (see below), whose sum is σ = 2146219644120. Its totient is φ = 1073109822056.

The previous prime is 1609664733013. The next prime is 1609664733091. The reversal of 1609664733087 is 7803374669061.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1609664733087 - 2³⁶ = 1540945256351 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1609664733087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1609664734087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268277455512 + ... + 268277455517.

It is an arithmetic number, because the mean of its divisors is an integer number (536554911030).

Almost surely, 2^{1609664733087} is an apocalyptic number.

1609664733087 is a deficient number, since it is larger than the sum of its proper divisors (536554911033).

1609664733087 is an equidigital number, since it uses as much as digits as its factorization.

1609664733087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536554911032.

The product of its (nonzero) digits is 27433728, while the sum is 60.

The spelling of 1609664733087 in words is "one trillion, six hundred nine billion, six hundred sixty-four million, seven hundred thirty-three thousand, eighty-seven".