1045587993 has 16 divisors (see below), whose sum is σ = 1469133120. Its totient is φ = 659632896.

The previous prime is 1045587971. The next prime is 1045588003. The reversal of 1045587993 is 3997855401.

It is not a de Polignac number, because 1045587993 - 2¹⁴ = 1045571609 is a prime.

It is a super-2 number, since 2×1045587993² = 2186508502211536098, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1045587913) 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, 43621 + ... + 63197.

It is an arithmetic number, because the mean of its divisors is an integer number (91820820).

Almost surely, 2^1045587993 is an apocalyptic number.

It is an amenable number.

1045587993 is a deficient number, since it is larger than the sum of its proper divisors (423545127).

1045587993 is a wasteful number, since it uses less digits than its factorization.

1045587993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20536.

The product of its (nonzero) digits is 1360800, while the sum is 51.

The square root of 1045587993 is about 32335.5530801624. The cubic root of 1045587993 is about 1014.9707557074.

The spelling of 1045587993 in words is "one billion, forty-five million, five hundred eighty-seven thousand, nine hundred ninety-three".