195038409623 has 4 divisors (see below), whose sum is σ = 196165799448. Its totient is φ = 193911019800.

The previous prime is 195038409583. The next prime is 195038409649. The reversal of 195038409623 is 326904830591.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 195038409623 - 2³⁴ = 177858540439 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 (195038409673) 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, 563694653 + ... + 563694998.

It is an arithmetic number, because the mean of its divisors is an integer number (49041449862).

Almost surely, 2^195038409623 is an apocalyptic number.

195038409623 is a deficient number, since it is larger than the sum of its proper divisors (1127389825).

195038409623 is a wasteful number, since it uses less digits than its factorization.

195038409623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127389824.

The product of its (nonzero) digits is 1399680, while the sum is 50.

The spelling of 195038409623 in words is "one hundred ninety-five billion, thirty-eight million, four hundred nine thousand, six hundred twenty-three".