1660765153 has 2 divisors, whose sum is σ = 1660765154. Its totient is φ = 1660765152.

The previous prime is 1660765151. The next prime is 1660765231. The reversal of 1660765153 is 3515670661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1629494689 + 31270464 = 40367^2 + 5592^2 .

It is a cyclic number.

It is not a de Polignac number, because 1660765153 - 2¹ = 1660765151 is a prime.

It is a super-2 number, since 2×1660765153² = 5516281786838226818, which contains 22 as substring.

Together with 1660765151, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1660765151) 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, 830382576 + 830382577.

It is an arithmetic number, because the mean of its divisors is an integer number (830382577).

Almost surely, 2^1660765153 is an apocalyptic number.

It is an amenable number.

1660765153 is a deficient number, since it is larger than the sum of its proper divisors (1).

1660765153 is an equidigital number, since it uses as much as digits as its factorization.

1660765153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 1660765153 is about 40752.4864640184. The cubic root of 1660765153 is about 1184.2300428900.

The spelling of 1660765153 in words is "one billion, six hundred sixty million, seven hundred sixty-five thousand, one hundred fifty-three".