20157894430 has 16 divisors (see below), whose sum is σ = 36286078320. Its totient is φ = 8062742592.

The previous prime is 20157894331. The next prime is 20157894431. The reversal of 20157894430 is 3449875102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20157894431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219706 + ... + 297634.

It is an arithmetic number, because the mean of its divisors is an integer number (2267879895).

Almost surely, 2^20157894430 is an apocalyptic number.

20157894430 is a deficient number, since it is larger than the sum of its proper divisors (16128183890).

20157894430 is a wasteful number, since it uses less digits than its factorization.

20157894430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103803.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 20157894430 in words is "twenty billion, one hundred fifty-seven million, eight hundred ninety-four thousand, four hundred thirty".