1969326828 has 36 divisors (see below), whose sum is σ = 5689167120. Its totient is φ = 562664736.

The previous prime is 1969326817. The next prime is 1969326829. The reversal of 1969326828 is 8286239691.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (1969326829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3907143 + ... + 3907646.

It is an arithmetic number, because the mean of its divisors is an integer number (158032420).

Almost surely, 2^1969326828 is an apocalyptic number.

1969326828 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1969326828 is an abundant number, since it is smaller than the sum of its proper divisors (3719840292).

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

1969326828 is a wasteful number, since it uses less digits than its factorization.

1969326828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7814806 (or 7814801 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 1969326828 is about 44377.0980123757. The cubic root of 1969326828 is about 1253.4468764709.

The spelling of 1969326828 in words is "one billion, nine hundred sixty-nine million, three hundred twenty-six thousand, eight hundred twenty-eight".