1969923768 has 64 divisors (see below), whose sum is σ = 5092485120. Its totient is φ = 634358400.

The previous prime is 1969923763. The next prime is 1969923793. The reversal of 1969923768 is 8673299691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1969923763) 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 in 15 ways as a sum of consecutive naturals, for example, 501733 + ... + 505643.

It is an arithmetic number, because the mean of its divisors is an integer number (79570080).

Almost surely, 2^1969923768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1969923768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2546242560).

1969923768 is an abundant number, since it is smaller than the sum of its proper divisors (3122561352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1969923768 is a wasteful number, since it uses less digits than its factorization.

1969923768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4628 (or 4624 counting only the distinct ones).

The product of its digits is 8817984, while the sum is 60.

The square root of 1969923768 is about 44383.8232692949. The cubic root of 1969923768 is about 1253.5735114509.

The spelling of 1969923768 in words is "one billion, nine hundred sixty-nine million, nine hundred twenty-three thousand, seven hundred sixty-eight".