1375046866 has 4 divisors (see below), whose sum is σ = 2062570302. Its totient is φ = 687523432.

The previous prime is 1375046863. The next prime is 1375046867. The reversal of 1375046866 is 6686405731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6686405731 = 17657 ⋅378683.

It can be written as a sum of positive squares in only one way, i.e., 971880625 + 403166241 = 31175^2 + 20079^2 .

It is not an unprimeable number, because it can be changed into a prime (1375046863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343761715 + ... + 343761718.

Almost surely, 2^1375046866 is an apocalyptic number.

1375046866 is a deficient number, since it is larger than the sum of its proper divisors (687523436).

1375046866 is an equidigital number, since it uses as much as digits as its factorization.

1375046866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687523435.

The product of its (nonzero) digits is 725760, while the sum is 46.

The square root of 1375046866 is about 37081.6243711087. The cubic root of 1375046866 is about 1112.0026789655.

The spelling of 1375046866 in words is "one billion, three hundred seventy-five million, forty-six thousand, eight hundred sixty-six".