1156540345 has 16 divisors (see below), whose sum is σ = 1474709760. Its totient is φ = 867711744.

The previous prime is 1156540331. The next prime is 1156540373. The reversal of 1156540345 is 5430456511.

It is a cyclic number.

It is not a de Polignac number, because 1156540345 - 2⁵ = 1156540313 is a prime.

It is a super-2 number, since 2×1156540345² = 2675171139225438050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1156540345.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16 + ... + 48094.

It is an arithmetic number, because the mean of its divisors is an integer number (92169360).

Almost surely, 2^1156540345 is an apocalyptic number.

It is an amenable number.

1156540345 is a deficient number, since it is larger than the sum of its proper divisors (318169415).

1156540345 is a wasteful number, since it uses less digits than its factorization.

1156540345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48384.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 1156540345 is about 34007.9453216451. The cubic root of 1156540345 is about 1049.6719595048.

Adding to 1156540345 its reverse (5430456511), we get a palindrome (6586996856).

The spelling of 1156540345 in words is "one billion, one hundred fifty-six million, five hundred forty thousand, three hundred forty-five".