1523666141 has 2 divisors, whose sum is σ = 1523666142. Its totient is φ = 1523666140.

The previous prime is 1523666093. The next prime is 1523666143. The reversal of 1523666141 is 1416663251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1390171225 + 133494916 = 37285^2 + 11554^2 .

It is a cyclic number.

It is not a de Polignac number, because 1523666141 - 2⁶ = 1523666077 is a prime.

Together with 1523666143, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1523666143) 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, 761833070 + 761833071.

It is an arithmetic number, because the mean of its divisors is an integer number (761833071).

Almost surely, 2^1523666141 is an apocalyptic number.

It is an amenable number.

1523666141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1523666141 is an equidigital number, since it uses as much as digits as its factorization.

1523666141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 35.

The square root of 1523666141 is about 39034.1663289995. The cubic root of 1523666141 is about 1150.7030712755.

The spelling of 1523666141 in words is "one billion, five hundred twenty-three million, six hundred sixty-six thousand, one hundred forty-one".