10618638 has 16 divisors (see below), whose sum is σ = 21358080. Its totient is φ = 3519416.

The previous prime is 10618637. The next prime is 10618639. The reversal of 10618638 is 83681601.

It is an interprime number because it is at equal distance from previous prime (10618637) and next prime (10618639).

It is a super-2 number, since 2×10618638² = 225510945950088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10618599 and 10618608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10618633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3870 + ... + 6017.

It is an arithmetic number, because the mean of its divisors is an integer number (1334880).

Almost surely, 2^10618638 is an apocalyptic number.

10618638 is an abundant number, since it is smaller than the sum of its proper divisors (10739442).

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

10618638 is a wasteful number, since it uses less digits than its factorization.

10618638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10071.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 10618638 is about 3258.6251702213. The cubic root of 10618638 is about 219.7975962113.

The spelling of 10618638 in words is "ten million, six hundred eighteen thousand, six hundred thirty-eight".