18761012 has 12 divisors (see below), whose sum is σ = 33014436. Its totient is φ = 9328320.

The previous prime is 18761009. The next prime is 18761021. The reversal of 18761012 is 21016781.

It can be written as a sum of positive squares in 2 ways, for example, as 4351396 + 14409616 = 2086^2 + 3796^2 .

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12233 + ... + 13680.

It is an arithmetic number, because the mean of its divisors is an integer number (2751203).

Almost surely, 2^18761012 is an apocalyptic number.

It is an amenable number.

18761012 is a deficient number, since it is larger than the sum of its proper divisors (14253424).

18761012 is a wasteful number, since it uses less digits than its factorization.

18761012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26098 (or 26096 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 18761012 is about 4331.3983885115. The cubic root of 18761012 is about 265.7166409891.

Adding to 18761012 its reverse (21016781), we get a palindrome (39777793).

The spelling of 18761012 in words is "eighteen million, seven hundred sixty-one thousand, twelve".