19900000552 has 8 divisors (see below), whose sum is σ = 37312501050. Its totient is φ = 9950000272.

The previous prime is 19900000543. The next prime is 19900000553. The reversal of 19900000552 is 25500000991.

It can be written as a sum of positive squares in only one way, i.e., 19095370596 + 804629956 = 138186^2 + 28366^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (19900000553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1243750027 + ... + 1243750042.

Almost surely, 2^19900000552 is an apocalyptic number.

It is an amenable number.

19900000552 is a deficient number, since it is larger than the sum of its proper divisors (17412500498).

19900000552 is a wasteful number, since it uses less digits than its factorization.

19900000552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487500075 (or 2487500071 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 31.

The spelling of 19900000552 in words is "nineteen billion, nine hundred million, five hundred fifty-two", and thus it is an aban number.