190225453993 has 4 divisors (see below), whose sum is σ = 190237956948. Its totient is φ = 190212951040.

The previous prime is 190225453987. The next prime is 190225454017. The reversal of 190225453993 is 399354522091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 399354522091 = 7 ⋅57050646013.

It can be written as a sum of positive squares in 2 ways, for example, as 113766567849 + 76458886144 = 337293^2 + 276512^2 .

It is a cyclic number.

It is not a de Polignac number, because 190225453993 - 2¹⁷ = 190225322921 is a prime.

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 190225453993.

It is not an unprimeable number, because it can be changed into a prime (190225453903) 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, 6228628 + ... + 6259093.

It is an arithmetic number, because the mean of its divisors is an integer number (47559489237).

Almost surely, 2^190225453993 is an apocalyptic number.

It is an amenable number.

190225453993 is a deficient number, since it is larger than the sum of its proper divisors (12502955).

190225453993 is a wasteful number, since it uses less digits than its factorization.

190225453993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12502954.

The product of its (nonzero) digits is 2624400, while the sum is 52.

The spelling of 190225453993 in words is "one hundred ninety billion, two hundred twenty-five million, four hundred fifty-three thousand, nine hundred ninety-three".