948778831 has 32 divisors (see below), whose sum is σ = 1279756800. Its totient is φ = 679294080.

The previous prime is 948778799. The next prime is 948778843. The reversal of 948778831 is 138877849.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 948778831 - 2⁵ = 948778799 is a prime.

It is a super-2 number, since 2×948778831² = 1800362540307453122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (948778931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 227160 + ... + 231298.

It is an arithmetic number, because the mean of its divisors is an integer number (39992400).

Almost surely, 2^948778831 is an apocalyptic number.

948778831 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

948778831 is a deficient number, since it is larger than the sum of its proper divisors (330977969).

948778831 is a wasteful number, since it uses less digits than its factorization.

948778831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4399.

The product of its digits is 2709504, while the sum is 55.

The square root of 948778831 is about 30802.2536675484. The cubic root of 948778831 is about 982.6261753107.

The spelling of 948778831 in words is "nine hundred forty-eight million, seven hundred seventy-eight thousand, eight hundred thirty-one".