1375198481 has 2 divisors, whose sum is σ = 1375198482. Its totient is φ = 1375198480.

The previous prime is 1375198463. The next prime is 1375198483. The reversal of 1375198481 is 1848915731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1368334081 + 6864400 = 36991^2 + 2620^2 .

It is a cyclic number.

It is not a de Polignac number, because 1375198481 - 2⁶ = 1375198417 is a prime.

It is a super-2 number, since 2×1375198481² = 3782341724289414722, which contains 22 as substring.

Together with 1375198483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1375198483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687599240 + 687599241.

It is an arithmetic number, because the mean of its divisors is an integer number (687599241).

Almost surely, 2^1375198481 is an apocalyptic number.

It is an amenable number.

1375198481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1375198481 is an equidigital number, since it uses as much as digits as its factorization.

1375198481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 47.

The square root of 1375198481 is about 37083.6686561618. The cubic root of 1375198481 is about 1112.0435478973.

The spelling of 1375198481 in words is "one billion, three hundred seventy-five million, one hundred ninety-eight thousand, four hundred eighty-one".