19621094354 has 8 divisors (see below), whose sum is σ = 29434091148. Its totient is φ = 9809730640.

The previous prime is 19621094333. The next prime is 19621094359. The reversal of 19621094354 is 45349012691.

It can be written as a sum of positive squares in 2 ways, for example, as 19344637225 + 276457129 = 139085^2 + 16627^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (19621094359) 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 in 3 ways as a sum of consecutive naturals, for example, 377777 + ... + 426564.

Almost surely, 2^19621094354 is an apocalyptic number.

19621094354 is a deficient number, since it is larger than the sum of its proper divisors (9812996794).

19621094354 is a wasteful number, since it uses less digits than its factorization.

19621094354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816540.

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 19621094354 in words is "nineteen billion, six hundred twenty-one million, ninety-four thousand, three hundred fifty-four".