1045943987 has 16 divisors (see below), whose sum is σ = 1151573760. Its totient is φ = 942112800.

The previous prime is 1045943893. The next prime is 1045944001. The reversal of 1045943987 is 7893495401.

It is a cyclic number.

It is not a de Polignac number, because 1045943987 - 2¹⁸ = 1045681843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1045949987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 682412 + ... + 683942.

It is an arithmetic number, because the mean of its divisors is an integer number (71973360).

Almost surely, 2^1045943987 is an apocalyptic number.

1045943987 is a deficient number, since it is larger than the sum of its proper divisors (105629773).

1045943987 is a wasteful number, since it uses less digits than its factorization.

1045943987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2074.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The square root of 1045943987 is about 32341.0572956420. The cubic root of 1045943987 is about 1015.0859325273.

The spelling of 1045943987 in words is "one billion, forty-five million, nine hundred forty-three thousand, nine hundred eighty-seven".