19754138228 has 48 divisors (see below), whose sum is σ = 38321373888. Its totient is φ = 8834496000.

The previous prime is 19754138219. The next prime is 19754138237. The reversal of 19754138228 is 82283145791.

It is an interprime number because it is at equal distance from previous prime (19754138219) and next prime (19754138237).

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, 2770508 + ... + 2777628.

It is an arithmetic number, because the mean of its divisors is an integer number (798361956).

Almost surely, 2^19754138228 is an apocalyptic number.

It is an amenable number.

19754138228 is a deficient number, since it is larger than the sum of its proper divisors (18567235660).

19754138228 is a wasteful number, since it uses less digits than its factorization.

19754138228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8144 (or 8142 counting only the distinct ones).

The product of its digits is 967680, while the sum is 50.

The spelling of 19754138228 in words is "nineteen billion, seven hundred fifty-four million, one hundred thirty-eight thousand, two hundred twenty-eight".