16261418 has 16 divisors (see below), whose sum is σ = 25941384. Its totient is φ = 7618560.

The previous prime is 16261411. The next prime is 16261447. The reversal of 16261418 is 81416261.

It can be written as a sum of positive squares in 4 ways, for example, as 14922769 + 1338649 = 3863^2 + 1157^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16261411) 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, 7808 + ... + 9668.

Almost surely, 2^16261418 is an apocalyptic number.

16261418 is a deficient number, since it is larger than the sum of its proper divisors (9679966).

16261418 is a wasteful number, since it uses less digits than its factorization.

16261418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2137.

The product of its digits is 2304, while the sum is 29.

The square root of 16261418 is about 4032.5448540593. The cubic root of 16261418 is about 253.3491614456.

Adding to 16261418 its reverse (81416261), we get a palindrome (97677679).

The spelling of 16261418 in words is "sixteen million, two hundred sixty-one thousand, four hundred eighteen".