9945906102 has 96 divisors (see below), whose sum is σ = 23852949120. Its totient is φ = 2969948160.

The previous prime is 9945906071. The next prime is 9945906107. The reversal of 9945906102 is 2016095499.

9945906102 is a `hidden beast` number, since 99 + 459 + 0 + 6 + 102 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9945906107) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12637353 + ... + 12638139.

It is an arithmetic number, because the mean of its divisors is an integer number (248468220).

Almost surely, 2^9945906102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9945906102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11926474560).

9945906102 is an abundant number, since it is smaller than the sum of its proper divisors (13907043018).

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

9945906102 is a wasteful number, since it uses less digits than its factorization.

9945906102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658 (or 1655 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 9945906102 is about 99729.1637486247. The cubic root of 9945906102 is about 2150.5429385610.

The spelling of 9945906102 in words is "nine billion, nine hundred forty-five million, nine hundred six thousand, one hundred two".