1151705645 has 12 divisors (see below), whose sum is σ = 1428073020. Its totient is φ = 891639360.

The previous prime is 1151705629. The next prime is 1151705669. The reversal of 1151705645 is 5465071511.

It can be written as a sum of positive squares in 2 ways, for example, as 754381156 + 397324489 = 27466^2 + 19933^2 .

It is not a de Polignac number, because 1151705645 - 2⁴ = 1151705629 is a prime.

It is a super-3 number, since 3×1151705645³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115040 + ... + 124649.

It is an arithmetic number, because the mean of its divisors is an integer number (119006085).

Almost surely, 2^1151705645 is an apocalyptic number.

It is an amenable number.

1151705645 is a deficient number, since it is larger than the sum of its proper divisors (276367375).

1151705645 is an equidigital number, since it uses as much as digits as its factorization.

1151705645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239756 (or 239725 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 35.

The square root of 1151705645 is about 33936.7889612438. The cubic root of 1151705645 is about 1048.2072643911.

The spelling of 1151705645 in words is "one billion, one hundred fifty-one million, seven hundred five thousand, six hundred forty-five".