1151646243 has 16 divisors (see below), whose sum is σ = 1690782336. Its totient is φ = 691442240.

The previous prime is 1151646241. The next prime is 1151646263. The reversal of 1151646243 is 3426461511.

It is a cyclic number.

It is not a de Polignac number, because 1151646243 - 2¹ = 1151646241 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1151646241) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 159546 + ... + 166607.

It is an arithmetic number, because the mean of its divisors is an integer number (105673896).

Almost surely, 2^1151646243 is an apocalyptic number.

1151646243 is a deficient number, since it is larger than the sum of its proper divisors (539136093).

1151646243 is a wasteful number, since it uses less digits than its factorization.

1151646243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326274.

The product of its digits is 17280, while the sum is 33.

The square root of 1151646243 is about 33935.9137640347. The cubic root of 1151646243 is about 1048.1892428076.

The spelling of 1151646243 in words is "one billion, one hundred fifty-one million, six hundred forty-six thousand, two hundred forty-three".