1919423304 has 40 divisors (see below), whose sum is σ = 5376164310. Its totient is φ = 639807552.

The previous prime is 1919423281. The next prime is 1919423333. The reversal of 1919423304 is 4033249191.

It can be written as a sum of positive squares in only one way, i.e., 1422044100 + 497379204 = 37710^2 + 22302^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1480389 + ... + 1481684.

Almost surely, 2^1919423304 is an apocalyptic number.

It is an amenable number.

1919423304 is an abundant number, since it is smaller than the sum of its proper divisors (3456741006).

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

1919423304 is a wasteful number, since it uses less digits than its factorization.

1919423304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2962091 (or 2962078 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 1919423304 is about 43811.2234935296. The cubic root of 1919423304 is about 1242.7685504373.

The spelling of 1919423304 in words is "one billion, nine hundred nineteen million, four hundred twenty-three thousand, three hundred four".