20148843394 has 8 divisors (see below), whose sum is σ = 32001104268. Its totient is φ = 9481808640.

The previous prime is 20148843371. The next prime is 20148843397. The reversal of 20148843394 is 49334884102.

It is a happy number.

20148843394 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 19317386169 + 831457225 = 138987^2 + 28835^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20148843397) 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, 296306487 + ... + 296306554.

Almost surely, 2^20148843394 is an apocalyptic number.

20148843394 is a deficient number, since it is larger than the sum of its proper divisors (11852260874).

20148843394 is a wasteful number, since it uses less digits than its factorization.

20148843394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592613060.

The product of its (nonzero) digits is 663552, while the sum is 46.

The spelling of 20148843394 in words is "twenty billion, one hundred forty-eight million, eight hundred forty-three thousand, three hundred ninety-four".