10000019990 has 32 divisors (see below), whose sum is σ = 19673673984. Its totient is φ = 3643269120.

The previous prime is 10000019989. The next prime is 10000020029. The reversal of 10000019990 is 9991000001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 943499 + ... + 954038.

It is an arithmetic number, because the mean of its divisors is an integer number (614802312).

Almost surely, 2^10000019990 is an apocalyptic number.

10000019990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10000019990 is a deficient number, since it is larger than the sum of its proper divisors (9673653994).

10000019990 is a wasteful number, since it uses less digits than its factorization.

10000019990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1897592.

The product of its (nonzero) digits is 729, while the sum is 29.

Adding to 10000019990 its reverse (9991000001), we get a palindrome (19991019991).

The spelling of 10000019990 in words is "ten billion, nineteen thousand, nine hundred ninety".