190621354319 has 4 divisors (see below), whose sum is σ = 207950568360. Its totient is φ = 173292140280.

The previous prime is 190621354291. The next prime is 190621354349. The reversal of 190621354319 is 913453126091.

190621354319 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: 913453126091 = 11 ⋅83041193281.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190621354319 is a prime.

It is a super-2 number, since 2×190621354319² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 190621354319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190621354349) 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 in 3 ways as a sum of consecutive naturals, for example, 8664607004 + ... + 8664607025.

It is an arithmetic number, because the mean of its divisors is an integer number (51987642090).

Almost surely, 2^190621354319 is an apocalyptic number.

190621354319 is a deficient number, since it is larger than the sum of its proper divisors (17329214041).

190621354319 is a wasteful number, since it uses less digits than its factorization.

190621354319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17329214040.

The product of its (nonzero) digits is 174960, while the sum is 44.

The spelling of 190621354319 in words is "one hundred ninety billion, six hundred twenty-one million, three hundred fifty-four thousand, three hundred nineteen".