154638853438 has 8 divisors (see below), whose sum is σ = 231974688888. Its totient is φ = 77313957144.

The previous prime is 154638853433. The next prime is 154638853483. The reversal of 154638853438 is 834358836451.

It is a happy number.

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 (154638853433) 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, 2699356 + ... + 2756047.

It is an arithmetic number, because the mean of its divisors is an integer number (28996836111).

Almost surely, 2^154638853438 is an apocalyptic number.

154638853438 is a deficient number, since it is larger than the sum of its proper divisors (77335835450).

154638853438 is a wasteful number, since it uses less digits than its factorization.

154638853438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5469578.

The product of its digits is 33177600, while the sum is 58.

The spelling of 154638853438 in words is "one hundred fifty-four billion, six hundred thirty-eight million, eight hundred fifty-three thousand, four hundred thirty-eight".