1253199687 has 8 divisors (see below), whose sum is σ = 1693822704. Its totient is φ = 824021568.

The previous prime is 1253199679. The next prime is 1253199721. The reversal of 1253199687 is 7869913521.

1253199687 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1253199687 - 2³ = 1253199679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253599687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2860968 + ... + 2861405.

It is an arithmetic number, because the mean of its divisors is an integer number (211727838).

Almost surely, 2^1253199687 is an apocalyptic number.

1253199687 is a deficient number, since it is larger than the sum of its proper divisors (440623017).

1253199687 is an equidigital number, since it uses as much as digits as its factorization.

1253199687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5722449.

The product of its digits is 816480, while the sum is 51.

The square root of 1253199687 is about 35400.5605464094. The cubic root of 1253199687 is about 1078.1356974330.

The spelling of 1253199687 in words is "one billion, two hundred fifty-three million, one hundred ninety-nine thousand, six hundred eighty-seven".