1912105904 has 80 divisors (see below), whose sum is σ = 3849753600. Its totient is φ = 919683072.

The previous prime is 1912105891. The next prime is 1912105927. The reversal of 1912105904 is 4095012191.

It is a super-2 number, since 2×1912105904² = 7312297976223314432, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15055889 + ... + 15056015.

It is an arithmetic number, because the mean of its divisors is an integer number (48121920).

Almost surely, 2^1912105904 is an apocalyptic number.

It is an amenable number.

1912105904 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

1912105904 is a wasteful number, since it uses less digits than its factorization.

1912105904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430 (or 424 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 32.

The square root of 1912105904 is about 43727.6331854355. The cubic root of 1912105904 is about 1241.1872742238.

The spelling of 1912105904 in words is "one billion, nine hundred twelve million, one hundred five thousand, nine hundred four".