613195121 has 16 divisors (see below), whose sum is σ = 775277568. Its totient is φ = 471080400.

The previous prime is 613195081. The next prime is 613195123. The reversal of 613195121 is 121591316.

It is a de Polignac number, because none of the positive numbers 2^k-613195121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (613195123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50615 + ... + 61548.

It is an arithmetic number, because the mean of its divisors is an integer number (48454848).

Almost surely, 2^613195121 is an apocalyptic number.

It is an amenable number.

613195121 is a deficient number, since it is larger than the sum of its proper divisors (162082447).

613195121 is a wasteful number, since it uses less digits than its factorization.

613195121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112252.

The product of its digits is 1620, while the sum is 29.

The square root of 613195121 is about 24762.7769242466. The cubic root of 613195121 is about 849.5707733696.

It can be divided in two parts, 613195 and 121, that added together give a palindrome (613316).

The spelling of 613195121 in words is "six hundred thirteen million, one hundred ninety-five thousand, one hundred twenty-one".