193125987 has 6 divisors (see below), whose sum is σ = 278959772. Its totient is φ = 128750652.

The previous prime is 193125983. The next prime is 193126019. The reversal of 193125987 is 789521391.

It is not a de Polignac number, because 193125987 - 2² = 193125983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (193125983) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10729213 + ... + 10729230.

Almost surely, 2^193125987 is an apocalyptic number.

193125987 is a deficient number, since it is larger than the sum of its proper divisors (85833785).

193125987 is a wasteful number, since it uses less digits than its factorization.

193125987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21458449 (or 21458446 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The square root of 193125987 is about 13896.9776210513. The cubic root of 193125987 is about 578.0253767349.

The spelling of 193125987 in words is "one hundred ninety-three million, one hundred twenty-five thousand, nine hundred eighty-seven".