2170204157 has 8 divisors (see below), whose sum is σ = 2371535712. Its totient is φ = 1969546000.

The previous prime is 2170204151. The next prime is 2170204171. The reversal of 2170204157 is 7514020712.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2170204157 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 (2170204151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161594 + ... + 174507.

It is an arithmetic number, because the mean of its divisors is an integer number (296441964).

Almost surely, 2^2170204157 is an apocalyptic number.

It is an amenable number.

2170204157 is a deficient number, since it is larger than the sum of its proper divisors (201331555).

2170204157 is a wasteful number, since it uses less digits than its factorization.

2170204157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336699.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 2170204157 is about 46585.4500568579. The cubic root of 2170204157 is about 1294.6931900886.

Adding to 2170204157 its reverse (7514020712), we get a palindrome (9684224869).

The spelling of 2170204157 in words is "two billion, one hundred seventy million, two hundred four thousand, one hundred fifty-seven".