19928230153 has 4 divisors (see below), whose sum is σ = 21461170948. Its totient is φ = 18395289360.

The previous prime is 19928230129. The next prime is 19928230181. The reversal of 19928230153 is 35103282991.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1319723584 + 18608506569 = 36328^2 + 136413^2 .

It is a cyclic number.

It is not a de Polignac number, because 19928230153 - 2¹³ = 19928221961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19928230103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 766470378 + ... + 766470403.

It is an arithmetic number, because the mean of its divisors is an integer number (5365292737).

Almost surely, 2^19928230153 is an apocalyptic number.

19928230153 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

19928230153 is a deficient number, since it is larger than the sum of its proper divisors (1532940795).

19928230153 is a wasteful number, since it uses less digits than its factorization.

19928230153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1532940794.

The product of its (nonzero) digits is 116640, while the sum is 43.

The spelling of 19928230153 in words is "nineteen billion, nine hundred twenty-eight million, two hundred thirty thousand, one hundred fifty-three".