609161901 has 8 divisors (see below), whose sum is σ = 859993344. Its totient is φ = 382219200.

The previous prime is 609161897. The next prime is 609161909. The reversal of 609161901 is 109161906.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 609161901 - 2² = 609161897 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609161909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5972125 + ... + 5972226.

It is an arithmetic number, because the mean of its divisors is an integer number (107499168).

Almost surely, 2^609161901 is an apocalyptic number.

It is an amenable number.

609161901 is a deficient number, since it is larger than the sum of its proper divisors (250831443).

609161901 is a wasteful number, since it uses less digits than its factorization.

609161901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11944371.

The product of its (nonzero) digits is 2916, while the sum is 33.

The square root of 609161901 is about 24681.2054203193. The cubic root of 609161901 is about 847.7040234171.

The spelling of 609161901 in words is "six hundred nine million, one hundred sixty-one thousand, nine hundred one".