2002002157 has 2 divisors, whose sum is σ = 2002002158. Its totient is φ = 2002002156.

The previous prime is 2002002077. The next prime is 2002002169. The reversal of 2002002157 is 7512002002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1728397476 + 273604681 = 41574^2 + 16541^2 .

It is a cyclic number.

It is not a de Polignac number, because 2002002157 - 2⁷ = 2002002029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2002002257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001001078 + 1001001079.

It is an arithmetic number, because the mean of its divisors is an integer number (1001001079).

Almost surely, 2^2002002157 is an apocalyptic number.

It is an amenable number.

2002002157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002002157 is an equidigital number, since it uses as much as digits as its factorization.

2002002157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 2002002157 is about 44743.7387463319. The cubic root of 2002002157 is about 1260.3413363044.

Adding to 2002002157 its reverse (7512002002), we get a palindrome (9514004159).

The spelling of 2002002157 in words is "two billion, two million, two thousand, one hundred fifty-seven".