698941189 has 4 divisors (see below), whose sum is σ = 699846156. Its totient is φ = 698036224.

The previous prime is 698941153. The next prime is 698941219. The reversal of 698941189 is 981149896.

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

It can be written as a sum of positive squares in 2 ways, for example, as 140422500 + 558518689 = 11850^2 + 23633^2 .

It is a cyclic number.

It is not a de Polignac number, because 698941189 - 2²⁷ = 564723461 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 (698941289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 451324 + ... + 452869.

It is an arithmetic number, because the mean of its divisors is an integer number (174961539).

Almost surely, 2^698941189 is an apocalyptic number.

It is an amenable number.

698941189 is a deficient number, since it is larger than the sum of its proper divisors (904967).

698941189 is an equidigital number, since it uses as much as digits as its factorization.

698941189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904966.

The product of its digits is 1119744, while the sum is 55.

The square root of 698941189 is about 26437.4958912526. The cubic root of 698941189 is about 887.4560984433.

The spelling of 698941189 in words is "six hundred ninety-eight million, nine hundred forty-one thousand, one hundred eighty-nine".