1398018133 has 2 divisors, whose sum is σ = 1398018134. Its totient is φ = 1398018132.

The previous prime is 1398018121. The next prime is 1398018151. The reversal of 1398018133 is 3318108931.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 937400689 + 460617444 = 30617^2 + 21462^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1398018133 is a prime.

It is a super-3 number, since 3×1398018133³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1398018092 and 1398018101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1398018113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699009066 + 699009067.

It is an arithmetic number, because the mean of its divisors is an integer number (699009067).

Almost surely, 2^1398018133 is an apocalyptic number.

It is an amenable number.

1398018133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1398018133 is an equidigital number, since it uses as much as digits as its factorization.

1398018133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 1398018133 is about 37390.0806765645. The cubic root of 1398018133 is about 1118.1608135796.

The spelling of 1398018133 in words is "one billion, three hundred ninety-eight million, eighteen thousand, one hundred thirty-three".