1005401745 has 12 divisors (see below), whose sum is σ = 1742696436. Its totient is φ = 536214240.

The previous prime is 1005401729. The next prime is 1005401753. The reversal of 1005401745 is 5471045001.

It is a happy number.

1005401745 is a `hidden beast` number, since 100 + 540 + 17 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 509359761 + 496041984 = 22569^2 + 22272^2 .

It is not a de Polignac number, because 1005401745 - 2⁴ = 1005401729 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11171086 + ... + 11171175.

It is an arithmetic number, because the mean of its divisors is an integer number (145224703).

Almost surely, 2^1005401745 is an apocalyptic number.

1005401745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1005401745 is a deficient number, since it is larger than the sum of its proper divisors (737294691).

1005401745 is a wasteful number, since it uses less digits than its factorization.

1005401745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22342272 (or 22342269 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 1005401745 is about 31708.0706603224. The cubic root of 1005401745 is about 1001.7973492669.

Adding to 1005401745 its reverse (5471045001), we get a palindrome (6476446746).

The spelling of 1005401745 in words is "one billion, five million, four hundred one thousand, seven hundred forty-five".