163867370436 has 480 divisors, whose sum is σ = 564123141120. Its totient is φ = 40184812800.

The previous prime is 163867370431. The next prime is 163867370461. The reversal of 163867370436 is 634073768361.

163867370436 is a `hidden beast` number, since 1 + 63 + 86 + 7 + 3 + 70 + 436 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (163867370431) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 247907946 + ... + 247908606.

It is an arithmetic number, because the mean of its divisors is an integer number (1175256544).

Almost surely, 2^163867370436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163867370436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282061570560).

163867370436 is an abundant number, since it is smaller than the sum of its proper divisors (400255770684).

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

163867370436 is a wasteful number, since it uses less digits than its factorization.

163867370436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237 (or 1226 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 54.

The spelling of 163867370436 in words is "one hundred sixty-three billion, eight hundred sixty-seven million, three hundred seventy thousand, four hundred thirty-six".