1665051151 has 2 divisors, whose sum is σ = 1665051152. Its totient is φ = 1665051150.

The previous prime is 1665051139. The next prime is 1665051161. The reversal of 1665051151 is 1511505661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1665051151 - 2¹¹ = 1665049103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1665051161) 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, 832525575 + 832525576.

It is an arithmetic number, because the mean of its divisors is an integer number (832525576).

Almost surely, 2^1665051151 is an apocalyptic number.

1665051151 is a deficient number, since it is larger than the sum of its proper divisors (1).

1665051151 is an equidigital number, since it uses as much as digits as its factorization.

1665051151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 31.

The square root of 1665051151 is about 40805.0383041114. The cubic root of 1665051151 is about 1185.2478965314.

The spelling of 1665051151 in words is "one billion, six hundred sixty-five million, fifty-one thousand, one hundred fifty-one".