948910381 has 4 divisors (see below), whose sum is σ = 957307932. Its totient is φ = 940512832.

The previous prime is 948910373. The next prime is 948910387. The reversal of 948910381 is 183019849.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 183019849 = 3187 ⋅57427.

It can be written as a sum of positive squares in 2 ways, for example, as 488807881 + 460102500 = 22109^2 + 21450^2 .

It is a cyclic number.

It is not a de Polignac number, because 948910381 - 2³ = 948910373 is a prime.

It is a super-2 number, since 2×948910381² = 1800861822339130322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (948910387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4198606 + ... + 4198831.

It is an arithmetic number, because the mean of its divisors is an integer number (239326983).

Almost surely, 2^948910381 is an apocalyptic number.

It is an amenable number.

948910381 is a deficient number, since it is larger than the sum of its proper divisors (8397551).

948910381 is a wasteful number, since it uses less digits than its factorization.

948910381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8397550.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 948910381 is about 30804.3889892333. The cubic root of 948910381 is about 982.6715875450.

The spelling of 948910381 in words is "nine hundred forty-eight million, nine hundred ten thousand, three hundred eighty-one".