189783029531 has 2 divisors, whose sum is σ = 189783029532. Its totient is φ = 189783029530.

The previous prime is 189783029461. The next prime is 189783029533. The reversal of 189783029531 is 135920387981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 189783029531 - 2³⁰ = 188709287707 is a prime.

It is a super-2 number, since 2×189783029531² (a number of 23 digits) contains 22 as substring.

Together with 189783029533, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (189783029533) 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, 94891514765 + 94891514766.

It is an arithmetic number, because the mean of its divisors is an integer number (94891514766).

Almost surely, 2^189783029531 is an apocalyptic number.

189783029531 is a deficient number, since it is larger than the sum of its proper divisors (1).

189783029531 is an equidigital number, since it uses as much as digits as its factorization.

189783029531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3265920, while the sum is 56.

The spelling of 189783029531 in words is "one hundred eighty-nine billion, seven hundred eighty-three million, twenty-nine thousand, five hundred thirty-one".