1919895072 has 48 divisors (see below), whose sum is σ = 5175942912. Its totient is φ = 622667520.

The previous prime is 1919895059. The next prime is 1919895079. The reversal of 1919895072 is 2705989191.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (1919895079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266704 + ... + 273807.

It is an arithmetic number, because the mean of its divisors is an integer number (107832144).

Almost surely, 2^1919895072 is an apocalyptic number.

1919895072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1919895072 is an abundant number, since it is smaller than the sum of its proper divisors (3256047840).

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

1919895072 is a wasteful number, since it uses less digits than its factorization.

1919895072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540561 (or 540553 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 51.

The square root of 1919895072 is about 43816.6072625437. The cubic root of 1919895072 is about 1242.8703606016.

The spelling of 1919895072 in words is "one billion, nine hundred nineteen million, eight hundred ninety-five thousand, seventy-two".