1919223000 has 96 divisors (see below), whose sum is σ = 6487004160. Its totient is φ = 511790400.

The previous prime is 1919222993. The next prime is 1919223037. The reversal of 1919223000 is 3229191.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 97624 + ... + 115623.

It is an arithmetic number, because the mean of its divisors is an integer number (67572960).

Almost surely, 2^1919223000 is an apocalyptic number.

1919223000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1919223000 is an abundant number, since it is smaller than the sum of its proper divisors (4567781160).

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

1919223000 is a wasteful number, since it uses less digits than its factorization.

1919223000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213274 (or 213257 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 1919223000 is about 43808.9374443161. The cubic root of 1919223000 is about 1242.7253186724.

The spelling of 1919223000 in words is "one billion, nine hundred nineteen million, two hundred twenty-three thousand".