13018247236 has 6 divisors (see below), whose sum is σ = 22781932670. Its totient is φ = 6509123616.

The previous prime is 13018247219. The next prime is 13018247251. The reversal of 13018247236 is 63274281031.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7673760000 + 5344487236 = 87600^2 + 73106^2 .

It is a super-2 number, since 2×13018247236² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13018247195 and 13018247204.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1627280901 + ... + 1627280908.

Almost surely, 2^13018247236 is an apocalyptic number.

It is an amenable number.

13018247236 is a deficient number, since it is larger than the sum of its proper divisors (9763685434).

13018247236 is a wasteful number, since it uses less digits than its factorization.

13018247236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3254561813 (or 3254561811 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 13018247236 in words is "thirteen billion, eighteen million, two hundred forty-seven thousand, two hundred thirty-six".