948145991 has 16 divisors (see below), whose sum is σ = 1043352576. Its totient is φ = 856217856.

The previous prime is 948145967. The next prime is 948146021. The reversal of 948145991 is 199541849.

948145991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 948145991 - 2²⁶ = 881037127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (948145291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262091 + ... + 265683.

It is an arithmetic number, because the mean of its divisors is an integer number (65209536).

Almost surely, 2^948145991 is an apocalyptic number.

948145991 is a deficient number, since it is larger than the sum of its proper divisors (95206585).

948145991 is a wasteful number, since it uses less digits than its factorization.

948145991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4042.

The product of its digits is 466560, while the sum is 50.

The square root of 948145991 is about 30791.9793290396. The cubic root of 948145991 is about 982.4076546055.

The spelling of 948145991 in words is "nine hundred forty-eight million, one hundred forty-five thousand, nine hundred ninety-one".