1375858663 has 4 divisors (see below), whose sum is σ = 1389481128. Its totient is φ = 1362236200.

The previous prime is 1375858651. The next prime is 1375858711. The reversal of 1375858663 is 3668585731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3668585731 = 101 ⋅36322631.

It is a cyclic number.

It is not a de Polignac number, because 1375858663 - 2¹³ = 1375850471 is a prime.

It is a super-3 number, since 3×1375858663³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1375858663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375858633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6811081 + ... + 6811282.

It is an arithmetic number, because the mean of its divisors is an integer number (347370282).

Almost surely, 2^1375858663 is an apocalyptic number.

1375858663 is a deficient number, since it is larger than the sum of its proper divisors (13622465).

1375858663 is a wasteful number, since it uses less digits than its factorization.

1375858663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13622464.

The product of its digits is 3628800, while the sum is 52.

The square root of 1375858663 is about 37092.5688379762. The cubic root of 1375858663 is about 1112.2214697744.

The spelling of 1375858663 in words is "one billion, three hundred seventy-five million, eight hundred fifty-eight thousand, six hundred sixty-three".