1969613689 has 16 divisors (see below), whose sum is σ = 2037619584. Its totient is φ = 1903075200.

The previous prime is 1969613669. The next prime is 1969613707. The reversal of 1969613689 is 9863169691.

It is a cyclic number.

It is not a de Polignac number, because 1969613689 - 2¹⁹ = 1969089401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1969613609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 821877 + ... + 824269.

It is an arithmetic number, because the mean of its divisors is an integer number (127351224).

Almost surely, 2^1969613689 is an apocalyptic number.

It is an amenable number.

1969613689 is a deficient number, since it is larger than the sum of its proper divisors (68005895).

1969613689 is a wasteful number, since it uses less digits than its factorization.

1969613689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2688.

The product of its digits is 3779136, while the sum is 58.

The square root of 1969613689 is about 44380.3299784939. The cubic root of 1969613689 is about 1253.5077344186.

The spelling of 1969613689 in words is "one billion, nine hundred sixty-nine million, six hundred thirteen thousand, six hundred eighty-nine".