209740314589 has 32 divisors (see below), whose sum is σ = 242393356800. Its totient is φ = 180061539840.

The previous prime is 209740314583. The next prime is 209740314601. The reversal of 209740314589 is 985413047902.

It is not a de Polignac number, because 209740314589 - 2³¹ = 207592830941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209740314583) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1135222 + ... + 1306984.

It is an arithmetic number, because the mean of its divisors is an integer number (7574792400).

Almost surely, 2^209740314589 is an apocalyptic number.

209740314589 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

209740314589 is a deficient number, since it is larger than the sum of its proper divisors (32653042211).

209740314589 is a wasteful number, since it uses less digits than its factorization.

209740314589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171925.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 209740314589 in words is "two hundred nine billion, seven hundred forty million, three hundred fourteen thousand, five hundred eighty-nine".