2387636397 has 6 divisors (see below), whose sum is σ = 3448808142. Its totient is φ = 1591757592.

The previous prime is 2387636369. The next prime is 2387636431. The reversal of 2387636397 is 7936367832.

It can be written as a sum of positive squares in only one way, i.e., 1891728036 + 495908361 = 43494^2 + 22269^2 .

It is not a de Polignac number, because 2387636397 - 2²⁰ = 2386587821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2387636327) 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, 132646458 + ... + 132646475.

It is an arithmetic number, because the mean of its divisors is an integer number (574801357).

Almost surely, 2^2387636397 is an apocalyptic number.

It is an amenable number.

2387636397 is a deficient number, since it is larger than the sum of its proper divisors (1061171745).

2387636397 is a wasteful number, since it uses less digits than its factorization.

2387636397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265292939 (or 265292936 counting only the distinct ones).

The product of its digits is 6858432, while the sum is 54.

The square root of 2387636397 is about 48863.4464298211. The cubic root of 2387636397 is about 1336.5628845100.

The spelling of 2387636397 in words is "two billion, three hundred eighty-seven million, six hundred thirty-six thousand, three hundred ninety-seven".