1919434548 has 48 divisors (see below), whose sum is σ = 4676958720. Its totient is φ = 611528544.

The previous prime is 1919434507. The next prime is 1919434553. The reversal of 1919434548 is 8454349191.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1919434497 and 1919434506.

It is a congruent 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, 679483 + ... + 682301.

It is an arithmetic number, because the mean of its divisors is an integer number (97436640).

Almost surely, 2^1919434548 is an apocalyptic number.

It is an amenable number.

1919434548 is an abundant number, since it is smaller than the sum of its proper divisors (2757524172).

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

1919434548 is a wasteful number, since it uses less digits than its factorization.

1919434548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5316 (or 5314 counting only the distinct ones).

The product of its digits is 622080, while the sum is 48.

The square root of 1919434548 is about 43811.3518166240. The cubic root of 1919434548 is about 1242.7709771493.

The spelling of 1919434548 in words is "one billion, nine hundred nineteen million, four hundred thirty-four thousand, five hundred forty-eight".