2389997438 has 8 divisors (see below), whose sum is σ = 3617886360. Its totient is φ = 1184035320.

The previous prime is 2389997437. The next prime is 2389997473. The reversal of 2389997438 is 8347999832.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2389997437) 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, 5481428 + ... + 5481863.

It is an arithmetic number, because the mean of its divisors is an integer number (452235795).

Almost surely, 2^2389997438 is an apocalyptic number.

2389997438 is a deficient number, since it is larger than the sum of its proper divisors (1227888922).

2389997438 is a wasteful number, since it uses less digits than its factorization.

2389997438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10963402.

The product of its digits is 23514624, while the sum is 62.

The square root of 2389997438 is about 48887.6000433648. The cubic root of 2389997438 is about 1337.0032977667.

The spelling of 2389997438 in words is "two billion, three hundred eighty-nine million, nine hundred ninety-seven thousand, four hundred thirty-eight".