9977965189 has 2 divisors, whose sum is σ = 9977965190. Its totient is φ = 9977965188.

The previous prime is 9977965181. The next prime is 9977965211. The reversal of 9977965189 is 9815697799.

9977965189 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9243284164 + 734681025 = 96142^2 + 27105^2 .

It is a cyclic number.

It is not a de Polignac number, because 9977965189 - 2³ = 9977965181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9977965181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4988982594 + 4988982595.

It is an arithmetic number, because the mean of its divisors is an integer number (4988982595).

Almost surely, 2^9977965189 is an apocalyptic number.

It is an amenable number.

9977965189 is a deficient number, since it is larger than the sum of its proper divisors (1).

9977965189 is an equidigital number, since it uses as much as digits as its factorization.

9977965189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77157360, while the sum is 70.

The square root of 9977965189 is about 99889.7651864294. The cubic root of 9977965189 is about 2152.8511076235.

The spelling of 9977965189 in words is "nine billion, nine hundred seventy-seven million, nine hundred sixty-five thousand, one hundred eighty-nine".