1919823404 has 24 divisors (see below), whose sum is σ = 3373178928. Its totient is φ = 956067840.

The previous prime is 1919823391. The next prime is 1919823407. The reversal of 1919823404 is 4043289191.

It is a super-2 number, since 2×1919823404² = 7371443805092294432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1919823407) 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, 1664492 + ... + 1665644.

It is an arithmetic number, because the mean of its divisors is an integer number (140549122).

Almost surely, 2^1919823404 is an apocalyptic number.

It is an amenable number.

1919823404 is a deficient number, since it is larger than the sum of its proper divisors (1453355524).

1919823404 is a wasteful number, since it uses less digits than its factorization.

1919823404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2465 (or 2463 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 1919823404 is about 43815.7894371424. The cubic root of 1919823404 is about 1242.8548953221.

The spelling of 1919823404 in words is "one billion, nine hundred nineteen million, eight hundred twenty-three thousand, four hundred four".