190364389 has 4 divisors (see below), whose sum is σ = 190939840. Its totient is φ = 189788940.

The previous prime is 190364387. The next prime is 190364407. The reversal of 190364389 is 983463091.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 983463091 = 13 ⋅75651007.

It is a cyclic number.

It is not a de Polignac number, because 190364389 - 2¹ = 190364387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190364387) 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, 287229 + ... + 287890.

It is an arithmetic number, because the mean of its divisors is an integer number (47734960).

Almost surely, 2^190364389 is an apocalyptic number.

It is an amenable number.

190364389 is a deficient number, since it is larger than the sum of its proper divisors (575451).

190364389 is an equidigital number, since it uses as much as digits as its factorization.

190364389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575450.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 190364389 is about 13797.2601990395. The cubic root of 190364389 is about 575.2569880873.

The spelling of 190364389 in words is "one hundred ninety million, three hundred sixty-four thousand, three hundred eighty-nine".