9651138 has 48 divisors (see below), whose sum is σ = 23786784. Its totient is φ = 2593920.

The previous prime is 9651133. The next prime is 9651167. The reversal of 9651138 is 8311569.

It is a junction number, because it is equal to n+sod(n) for n = 9651099 and 9651108.

It is not an unprimeable number, because it can be changed into a prime (9651133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4033 + ... + 5963.

It is an arithmetic number, because the mean of its divisors is an integer number (495558).

Almost surely, 2^9651138 is an apocalyptic number.

9651138 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 9651138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11893392).

9651138 is an abundant number, since it is smaller than the sum of its proper divisors (14135646).

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

9651138 is a wasteful number, since it uses less digits than its factorization.

9651138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1967 (or 1960 counting only the distinct ones).

The product of its digits is 6480, while the sum is 33.

The square root of 9651138 is about 3106.6280755829. The cubic root of 9651138 is about 212.9084223575.

The spelling of 9651138 in words is "nine million, six hundred fifty-one thousand, one hundred thirty-eight".