1398481141 has 2 divisors, whose sum is σ = 1398481142. Its totient is φ = 1398481140.

The previous prime is 1398481109. The next prime is 1398481163. The reversal of 1398481141 is 1411848931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1031758641 + 366722500 = 32121^2 + 19150^2 .

It is an emirp because it is prime and its reverse (1411848931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1398481141 - 2⁵ = 1398481109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1398481094 and 1398481103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1398481241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699240570 + 699240571.

It is an arithmetic number, because the mean of its divisors is an integer number (699240571).

Almost surely, 2^1398481141 is an apocalyptic number.

It is an amenable number.

1398481141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1398481141 is an equidigital number, since it uses as much as digits as its factorization.

1398481141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 40.

The square root of 1398481141 is about 37396.2717526761. The cubic root of 1398481141 is about 1118.2842407480.

The spelling of 1398481141 in words is "one billion, three hundred ninety-eight million, four hundred eighty-one thousand, one hundred forty-one".