195420629 has 4 divisors (see below), whose sum is σ = 195449100. Its totient is φ = 195392160.

The previous prime is 195420623. The next prime is 195420649. The reversal of 195420629 is 926024591.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 169390225 + 26030404 = 13015^2 + 5102^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195420629 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 195420592 and 195420601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195420623) 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, 3089 + ... + 20009.

It is an arithmetic number, because the mean of its divisors is an integer number (48862275).

Almost surely, 2^195420629 is an apocalyptic number.

It is an amenable number.

195420629 is a deficient number, since it is larger than the sum of its proper divisors (28471).

195420629 is a wasteful number, since it uses less digits than its factorization.

195420629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28470.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 195420629 is about 13979.2928648054. The cubic root of 195420629 is about 580.3056543922.

The spelling of 195420629 in words is "one hundred ninety-five million, four hundred twenty thousand, six hundred twenty-nine".