988125491 has 2 divisors, whose sum is σ = 988125492. Its totient is φ = 988125490.

The previous prime is 988125431. The next prime is 988125503. The reversal of 988125491 is 194521889.

It is a strong prime.

It is an emirp because it is prime and its reverse (194521889) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 988125491 - 2¹⁸ = 987863347 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (988125401) 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, 494062745 + 494062746.

It is an arithmetic number, because the mean of its divisors is an integer number (494062746).

Almost surely, 2^988125491 is an apocalyptic number.

988125491 is a deficient number, since it is larger than the sum of its proper divisors (1).

988125491 is an equidigital number, since it uses as much as digits as its factorization.

988125491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 47.

The square root of 988125491 is about 31434.4634279003. The cubic root of 988125491 is about 996.0260590457.

The spelling of 988125491 in words is "nine hundred eighty-eight million, one hundred twenty-five thousand, four hundred ninety-one".