2190157 has 2 divisors, whose sum is σ = 2190158. Its totient is φ = 2190156.

The previous prime is 2190143. The next prime is 2190169. The reversal of 2190157 is 7510912.

2190157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1798281 + 391876 = 1341^2 + 626^2 .

It is a cyclic number.

It is not a de Polignac number, because 2190157 - 2¹⁹ = 1665869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2190107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1095078 + 1095079.

It is an arithmetic number, because the mean of its divisors is an integer number (1095079).

2^2190157 is an apocalyptic number.

It is an amenable number.

2190157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2190157 is an equidigital number, since it uses as much as digits as its factorization.

2190157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 2190157 is about 1479.9179031284. The cubic root of 2190157 is about 129.8648892119.

The spelling of 2190157 in words is "two million, one hundred ninety thousand, one hundred fifty-seven".