1005002745 has 16 divisors (see below), whose sum is σ = 1614416832. Its totient is φ = 533864000.

The previous prime is 1005002737. The next prime is 1005002759. The reversal of 1005002745 is 5472005001.

It is not a de Polignac number, because 1005002745 - 2³ = 1005002737 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129702 + ... + 137231.

It is an arithmetic number, because the mean of its divisors is an integer number (100901052).

Almost surely, 2^1005002745 is an apocalyptic number.

1005002745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1005002745 is a deficient number, since it is larger than the sum of its proper divisors (609414087).

1005002745 is a wasteful number, since it uses less digits than its factorization.

1005002745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267192.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 1005002745 is about 31701.7782624256. The cubic root of 1005002745 is about 1001.6648085411.

Adding to 1005002745 its reverse (5472005001), we get a palindrome (6477007746).

The spelling of 1005002745 in words is "one billion, five million, two thousand, seven hundred forty-five".