989705161494 has 128 divisors (see below), whose sum is σ = 2521599759360. Its totient is φ = 281867040000.

The previous prime is 989705161493. The next prime is 989705161553. The reversal of 989705161494 is 494161507989.

989705161494 is a `hidden beast` number, since 9 + 8 + 9 + 7 + 0 + 5 + 1 + 614 + 9 + 4 = 666.

989705161494 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989705161493) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 304429369 + ... + 304432619.

It is an arithmetic number, because the mean of its divisors is an integer number (19699998120).

Almost surely, 2^989705161494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 989705161494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1260799879680).

989705161494 is an abundant number, since it is smaller than the sum of its proper divisors (1531894597866).

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

989705161494 is a wasteful number, since it uses less digits than its factorization.

989705161494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5603 (or 5597 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 63.

The spelling of 989705161494 in words is "nine hundred eighty-nine billion, seven hundred five million, one hundred sixty-one thousand, four hundred ninety-four".