9919653554 has 4 divisors (see below), whose sum is σ = 14879480334. Its totient is φ = 4959826776.

The previous prime is 9919653553. The next prime is 9919653559. The reversal of 9919653554 is 4553569199.

9919653554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4553569199 = 31 ⋅146889329.

It can be written as a sum of positive squares in only one way, i.e., 5127276025 + 4792377529 = 71605^2 + 69227^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9919653554.

It is not an unprimeable number, because it can be changed into a prime (9919653553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2479913387 + ... + 2479913390.

Almost surely, 2^9919653554 is an apocalyptic number.

9919653554 is a deficient number, since it is larger than the sum of its proper divisors (4959826780).

9919653554 is a wasteful number, since it uses less digits than its factorization.

9919653554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4959826779.

The product of its digits is 6561000, while the sum is 56.

The square root of 9919653554 is about 99597.4575679520. The cubic root of 9919653554 is about 2148.6491282606.

The spelling of 9919653554 in words is "nine billion, nine hundred nineteen million, six hundred fifty-three thousand, five hundred fifty-four".