19408581004 has 24 divisors (see below), whose sum is σ = 36195844608. Its totient is φ = 9084865680.

The previous prime is 19408580969. The next prime is 19408581013. The reversal of 19408581004 is 40018580491.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2239962 + ... + 2248609.

It is an arithmetic number, because the mean of its divisors is an integer number (1508160192).

Almost surely, 2^19408581004 is an apocalyptic number.

It is an amenable number.

19408581004 is a deficient number, since it is larger than the sum of its proper divisors (16787263604).

19408581004 is a wasteful number, since it uses less digits than its factorization.

19408581004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4488645 (or 4488643 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 40.

The spelling of 19408581004 in words is "nineteen billion, four hundred eight million, five hundred eighty-one thousand, four".