1919125104 has 160 divisors (see below), whose sum is σ = 5706759744. Its totient is φ = 550502400.

The previous prime is 1919125099. The next prime is 1919125123. The reversal of 1919125104 is 4015219191.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1197904 + ... + 1199504.

Almost surely, 2^1919125104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1919125104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2853379872).

1919125104 is an abundant number, since it is smaller than the sum of its proper divisors (3787634640).

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

1919125104 is a wasteful number, since it uses less digits than its factorization.

1919125104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1755 (or 1749 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 33.

The square root of 1919125104 is about 43807.8201238089. The cubic root of 1919125104 is about 1242.7041886098.

The spelling of 1919125104 in words is "one billion, nine hundred nineteen million, one hundred twenty-five thousand, one hundred four".