19213948910 has 16 divisors (see below), whose sum is σ = 37245501216. Its totient is φ = 7094381088.

The previous prime is 19213948907. The next prime is 19213948933. The reversal of 19213948910 is 1984931291.

It is a congruent number.

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, 73899674 + ... + 73899933.

It is an arithmetic number, because the mean of its divisors is an integer number (2327843826).

Almost surely, 2^19213948910 is an apocalyptic number.

19213948910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19213948910 is a deficient number, since it is larger than the sum of its proper divisors (18031552306).

19213948910 is a wasteful number, since it uses less digits than its factorization.

19213948910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147799627.

The product of its (nonzero) digits is 139968, while the sum is 47.

The spelling of 19213948910 in words is "nineteen billion, two hundred thirteen million, nine hundred forty-eight thousand, nine hundred ten".