1375040287 has 4 divisors (see below), whose sum is σ = 1412203576. Its totient is φ = 1337877000.

The previous prime is 1375040269. The next prime is 1375040297. The reversal of 1375040287 is 7820405731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1375040287 - 2¹¹ = 1375038239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 37163251 = 1375040287 / (1 + 3 + 7 + 5 + 0 + 4 + 0 + 2 + 8 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375040237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18581589 + ... + 18581662.

It is an arithmetic number, because the mean of its divisors is an integer number (353050894).

Almost surely, 2^1375040287 is an apocalyptic number.

1375040287 is a deficient number, since it is larger than the sum of its proper divisors (37163289).

1375040287 is an equidigital number, since it uses as much as digits as its factorization.

1375040287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37163288.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 1375040287 is about 37081.5356612964. The cubic root of 1375040287 is about 1112.0009054799. Note that the first 3 decimals are identical.

The spelling of 1375040287 in words is "one billion, three hundred seventy-five million, forty thousand, two hundred eighty-seven".