1660942237 has 2 divisors, whose sum is σ = 1660942238. Its totient is φ = 1660942236.

The previous prime is 1660942229. The next prime is 1660942271. The reversal of 1660942237 is 7322490661.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1159674916 + 501267321 = 34054^2 + 22389^2 .

It is a cyclic number.

It is not a de Polignac number, because 1660942237 - 2³ = 1660942229 is a prime.

It is a super-2 number, since 2×1660942237² = 5517458229301128338, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1660942237.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1660942277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 830471118 + 830471119.

It is an arithmetic number, because the mean of its divisors is an integer number (830471119).

Almost surely, 2^1660942237 is an apocalyptic number.

It is an amenable number.

1660942237 is a deficient number, since it is larger than the sum of its proper divisors (1).

1660942237 is an equidigital number, since it uses as much as digits as its factorization.

1660942237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 1660942237 is about 40754.6590833490. The cubic root of 1660942237 is about 1184.2721320719.

The spelling of 1660942237 in words is "one billion, six hundred sixty million, nine hundred forty-two thousand, two hundred thirty-seven".