1969499172 has 12 divisors (see below), whose sum is σ = 4595498096. Its totient is φ = 656499720.

The previous prime is 1969499149. The next prime is 1969499183. The reversal of 1969499172 is 2719949691.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82062454 + ... + 82062477.

Almost surely, 2^1969499172 is an apocalyptic number.

1969499172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1969499172 is an abundant number, since it is smaller than the sum of its proper divisors (2625998924).

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

1969499172 is a wasteful number, since it uses less digits than its factorization.

1969499172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164124938 (or 164124936 counting only the distinct ones).

The product of its digits is 2204496, while the sum is 57.

The square root of 1969499172 is about 44379.0397823116. The cubic root of 1969499172 is about 1253.4834401914.

The spelling of 1969499172 in words is "one billion, nine hundred sixty-nine million, four hundred ninety-nine thousand, one hundred seventy-two".