2154250187 has 2 divisors, whose sum is σ = 2154250188. Its totient is φ = 2154250186.

The previous prime is 2154250169. The next prime is 2154250201. The reversal of 2154250187 is 7810524512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2154250187 - 2⁸ = 2154249931 is a prime.

It is not a weakly prime, because it can be changed into another prime (2154250117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077125093 + 1077125094.

It is an arithmetic number, because the mean of its divisors is an integer number (1077125094).

Almost surely, 2^2154250187 is an apocalyptic number.

2154250187 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154250187 is an equidigital number, since it uses as much as digits as its factorization.

2154250187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22400, while the sum is 35.

The square root of 2154250187 is about 46413.9007949127. The cubic root of 2154250187 is about 1291.5127950751.

Adding to 2154250187 its reverse (7810524512), we get a palindrome (9964774699).

The spelling of 2154250187 in words is "two billion, one hundred fifty-four million, two hundred fifty thousand, one hundred eighty-seven".