1929109092 has 12 divisors (see below), whose sum is σ = 4501254576. Its totient is φ = 643036360.

The previous prime is 1929109057. The next prime is 1929109097. The reversal of 1929109092 is 2909019291.

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

It is not an unprimeable number, because it can be changed into a prime (1929109097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80379534 + ... + 80379557.

It is an arithmetic number, because the mean of its divisors is an integer number (375104548).

Almost surely, 2^1929109092 is an apocalyptic number.

1929109092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1929109092 is an abundant number, since it is smaller than the sum of its proper divisors (2572145484).

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

1929109092 is a wasteful number, since it uses less digits than its factorization.

1929109092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160759098 (or 160759096 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 42.

The square root of 1929109092 is about 43921.6244235115. The cubic root of 1929109092 is about 1244.8554623258.

The spelling of 1929109092 in words is "one billion, nine hundred twenty-nine million, one hundred nine thousand, ninety-two".