1125587187938 has 4 divisors (see below), whose sum is σ = 1688380781910. Its totient is φ = 562793593968.

The previous prime is 1125587187929. The next prime is 1125587187941. The reversal of 1125587187938 is 8397817855211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 592341111769 + 533246076169 = 769637^2 + 730237^2 .

It is a super-3 number, since 3×1125587187938³ (a number of 37 digits) contains 333 as substring.

It is an unprimeable number.

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, 281396796983 + ... + 281396796986.

Almost surely, 2^{1125587187938} is an apocalyptic number.

1125587187938 is a deficient number, since it is larger than the sum of its proper divisors (562793593972).

1125587187938 is an equidigital number, since it uses as much as digits as its factorization.

1125587187938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562793593971.

The product of its digits is 33868800, while the sum is 65.

The spelling of 1125587187938 in words is "one trillion, one hundred twenty-five billion, five hundred eighty-seven million, one hundred eighty-seven thousand, nine hundred thirty-eight".