19308153434 has 4 divisors (see below), whose sum is σ = 28962230154. Its totient is φ = 9654076716.

The previous prime is 19308153409. The next prime is 19308153437. The reversal of 19308153434 is 43435180391.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43435180391 = 101 ⋅430051291.

It can be written as a sum of positive squares in only one way, i.e., 18568150225 + 740003209 = 136265^2 + 27203^2 .

It is a junction number, because it is equal to n+sod(n) for n = 19308153391 and 19308153400.

It is not an unprimeable number, because it can be changed into a prime (19308153437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4827038357 + ... + 4827038360.

Almost surely, 2^19308153434 is an apocalyptic number.

19308153434 is a deficient number, since it is larger than the sum of its proper divisors (9654076720).

19308153434 is an equidigital number, since it uses as much as digits as its factorization.

19308153434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9654076719.

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 19308153434 in words is "nineteen billion, three hundred eight million, one hundred fifty-three thousand, four hundred thirty-four".