9891042148 has 24 divisors (see below), whose sum is σ = 19074321728. Its totient is φ = 4458930336.

The previous prime is 9891042101. The next prime is 9891042167. The reversal of 9891042148 is 8412401989.

It is a junction number, because it is equal to n+sod(n) for n = 9891042098 and 9891042107.

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, 2209536 + ... + 2214007.

Almost surely, 2^9891042148 is an apocalyptic number.

It is an amenable number.

9891042148 is a deficient number, since it is larger than the sum of its proper divisors (9183279580).

9891042148 is a wasteful number, since it uses less digits than its factorization.

9891042148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4423603 (or 4423601 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 46.

The square root of 9891042148 is about 99453.7186232873. The cubic root of 9891042148 is about 2146.5813452687.

The spelling of 9891042148 in words is "nine billion, eight hundred ninety-one million, forty-two thousand, one hundred forty-eight".