958812138 has 48 divisors (see below), whose sum is σ = 2209648896. Its totient is φ = 299433600.

The previous prime is 958812133. The next prime is 958812139. The reversal of 958812138 is 831218859.

It is a happy number.

It is a super-2 number, since 2×958812138² = 1838641431952262088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 958812093 and 958812102.

It is not an unprimeable number, because it can be changed into a prime (958812133) 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 23 ways as a sum of consecutive naturals, for example, 61213 + ... + 75263.

It is an arithmetic number, because the mean of its divisors is an integer number (46034352).

Almost surely, 2^958812138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 958812138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1104824448).

958812138 is an abundant number, since it is smaller than the sum of its proper divisors (1250836758).

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

958812138 is a wasteful number, since it uses less digits than its factorization.

958812138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14299 (or 14296 counting only the distinct ones).

The product of its digits is 138240, while the sum is 45.

The square root of 958812138 is about 30964.6917956565. The cubic root of 958812138 is about 986.0777840760.

The spelling of 958812138 in words is "nine hundred fifty-eight million, eight hundred twelve thousand, one hundred thirty-eight".