20438162286 has 16 divisors (see below), whose sum is σ = 41188359168. Its totient is φ = 6760715000.

The previous prime is 20438162281. The next prime is 20438162291. The reversal of 20438162286 is 68226183402.

It is an interprime number because it is at equal distance from previous prime (20438162281) and next prime (20438162291).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20438162281) 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, 13000590 + ... + 13002161.

It is an arithmetic number, because the mean of its divisors is an integer number (2574272448).

Almost surely, 2^20438162286 is an apocalyptic number.

20438162286 is an abundant number, since it is smaller than the sum of its proper divisors (20750196882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20438162286 is a wasteful number, since it uses less digits than its factorization.

20438162286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26002887.

The product of its (nonzero) digits is 221184, while the sum is 42.

The spelling of 20438162286 in words is "twenty billion, four hundred thirty-eight million, one hundred sixty-two thousand, two hundred eighty-six".