1919925000 has 576 divisors, whose sum is σ = 7896994560. Its totient is φ = 411840000.

The previous prime is 1919924989. The next prime is 1919925011. The reversal of 1919925000 is 5299191.

It is an interprime number because it is at equal distance from previous prime (1919924989) and next prime (1919925011).

It is a super-2 number, since 2×1919925000² = 7372224011250000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 36224974 + ... + 36225026.

It is an arithmetic number, because the mean of its divisors is an integer number (13710060).

Almost surely, 2^1919925000 is an apocalyptic number.

1919925000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1919925000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3948497280).

1919925000 is an abundant number, since it is smaller than the sum of its proper divisors (5977069560).

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

1919925000 is a wasteful number, since it uses less digits than its factorization.

1919925000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 36.

The square root of 1919925000 is about 43816.9487755594. The cubic root of 1919925000 is about 1242.8768186682.

The spelling of 1919925000 in words is "one billion, nine hundred nineteen million, nine hundred twenty-five thousand".