9161984742 has 16 divisors (see below), whose sum is σ = 18339875760. Its totient is φ = 3051343872.

The previous prime is 9161984723. The next prime is 9161984771. The reversal of 9161984742 is 2474891619.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 655267 + ... + 669102.

It is an arithmetic number, because the mean of its divisors is an integer number (1146242235).

Almost surely, 2^9161984742 is an apocalyptic number.

9161984742 is an abundant number, since it is smaller than the sum of its proper divisors (9177891018).

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

9161984742 is a wasteful number, since it uses less digits than its factorization.

9161984742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325527.

The product of its digits is 870912, while the sum is 51.

The square root of 9161984742 is about 95718.2570986330. The cubic root of 9161984742 is about 2092.4890213521.

The spelling of 9161984742 in words is "nine billion, one hundred sixty-one million, nine hundred eighty-four thousand, seven hundred forty-two".