1389036238 has 8 divisors (see below), whose sum is σ = 2206116432. Its totient is φ = 653664096.

The previous prime is 1389036227. The next prime is 1389036269. The reversal of 1389036238 is 8326309831.

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

It is a junction number, because it is equal to n+sod(n) for n = 1389036194 and 1389036203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20426970 + ... + 20427037.

It is an arithmetic number, because the mean of its divisors is an integer number (275764554).

Almost surely, 2^1389036238 is an apocalyptic number.

1389036238 is a deficient number, since it is larger than the sum of its proper divisors (817080194).

1389036238 is a wasteful number, since it uses less digits than its factorization.

1389036238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40854026.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 1389036238 is about 37269.7764683396. The cubic root of 1389036238 is about 1115.7610382151.

The spelling of 1389036238 in words is "one billion, three hundred eighty-nine million, thirty-six thousand, two hundred thirty-eight".