368635989 has 4 divisors (see below), whose sum is σ = 491514656. Its totient is φ = 245757324.

The previous prime is 368635963. The next prime is 368635991. The reversal of 368635989 is 989536863.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 368635989 - 2⁵ = 368635957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (368635909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61439329 + ... + 61439334.

It is an arithmetic number, because the mean of its divisors is an integer number (122878664).

Almost surely, 2^368635989 is an apocalyptic number.

It is an amenable number.

368635989 is a deficient number, since it is larger than the sum of its proper divisors (122878667).

368635989 is a wasteful number, since it uses less digits than its factorization.

368635989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122878666.

The product of its digits is 8398080, while the sum is 57.

The square root of 368635989 is about 19199.8955465909. The cubic root of 368635989 is about 717.0221589023.

The spelling of 368635989 in words is "three hundred sixty-eight million, six hundred thirty-five thousand, nine hundred eighty-nine".