1051745905 has 32 divisors (see below), whose sum is σ = 1495169280. Its totient is φ = 695174400.

The previous prime is 1051745887. The next prime is 1051745911. The reversal of 1051745905 is 5095471501.

It is not a de Polignac number, because 1051745905 - 2¹¹ = 1051743857 is a prime.

It is a super-2 number, since 2×1051745905² = 2212338897368538050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137430 + ... + 144880.

It is an arithmetic number, because the mean of its divisors is an integer number (46724040).

Almost surely, 2^1051745905 is an apocalyptic number.

It is an amenable number.

1051745905 is a deficient number, since it is larger than the sum of its proper divisors (443423375).

1051745905 is a wasteful number, since it uses less digits than its factorization.

1051745905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7609.

The product of its (nonzero) digits is 31500, while the sum is 37.

The square root of 1051745905 is about 32430.6322016701. The cubic root of 1051745905 is about 1016.9593881942.

The spelling of 1051745905 in words is "one billion, fifty-one million, seven hundred forty-five thousand, nine hundred five".