1969719620089 has 27 divisors (see below), whose sum is σ = 2180187024717. Its totient is φ = 1778742848064.

The previous prime is 1969719620087. The next prime is 1969719620117. The reversal of 1969719620089 is 9800269179691.

The square root of 1969719620089 is 1403467.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 328194931689 + 1641524688400 = 572883^2 + 1281220^2 .

It is not a de Polignac number, because 1969719620089 - 2¹ = 1969719620087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1969719620081) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 857517189 + ... + 857519485.

Almost surely, 2^{1969719620089} is an apocalyptic number.

1969719620089 is the 1403467-th square number.

1969719620089 is the 701734-th centered octagonal number.

It is an amenable number.

1969719620089 is a deficient number, since it is larger than the sum of its proper divisors (210467404628).

1969719620089 is an frugal number, since it uses more digits than its factorization.

1969719620089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4714 (or 2357 counting only the distinct ones).

The product of its (nonzero) digits is 26453952, while the sum is 67.

The spelling of 1969719620089 in words is "one trillion, nine hundred sixty-nine billion, seven hundred nineteen million, six hundred twenty thousand, eighty-nine".