193215513 has 4 divisors (see below), whose sum is σ = 257620688. Its totient is φ = 128810340.

The previous prime is 193215481. The next prime is 193215521. The reversal of 193215513 is 315512391.

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: 315512391 = 3 ⋅105170797.

It is not a de Polignac number, because 193215513 - 2⁵ = 193215481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (193215553) 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, 32202583 + ... + 32202588.

It is an arithmetic number, because the mean of its divisors is an integer number (64405172).

Almost surely, 2^193215513 is an apocalyptic number.

It is an amenable number.

193215513 is a deficient number, since it is larger than the sum of its proper divisors (64405175).

193215513 is an equidigital number, since it uses as much as digits as its factorization.

193215513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64405174.

The product of its digits is 4050, while the sum is 30.

The square root of 193215513 is about 13900.1983079379. The cubic root of 193215513 is about 578.1146799346.

The spelling of 193215513 in words is "one hundred ninety-three million, two hundred fifteen thousand, five hundred thirteen".