1924434890 has 32 divisors (see below), whose sum is σ = 3987753984. Its totient is φ = 654986880.

The previous prime is 1924434791. The next prime is 1924434923. The reversal of 1924434890 is 984344291.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90746 + ... + 109925.

It is an arithmetic number, because the mean of its divisors is an integer number (124617312).

Almost surely, 2^1924434890 is an apocalyptic number.

1924434890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1924434890 is an abundant number, since it is smaller than the sum of its proper divisors (2063319094).

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

1924434890 is a wasteful number, since it uses less digits than its factorization.

1924434890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200822.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 1924434890 is about 43868.3814381155. The cubic root of 1924434890 is about 1243.8492272374.

The spelling of 1924434890 in words is "one billion, nine hundred twenty-four million, four hundred thirty-four thousand, eight hundred ninety".