1149858361 has 8 divisors (see below), whose sum is σ = 1181396744. Its totient is φ = 1118344320.

The previous prime is 1149858299. The next prime is 1149858377. The reversal of 1149858361 is 1638589411.

It can be written as a sum of positive squares in 4 ways, for example, as 304851600 + 845006761 = 17460^2 + 29069^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1149858361 - 2⁷ = 1149858233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1149855361) 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 7 ways as a sum of consecutive naturals, for example, 131671 + ... + 140131.

It is an arithmetic number, because the mean of its divisors is an integer number (147674593).

Almost surely, 2^1149858361 is an apocalyptic number.

It is an amenable number.

1149858361 is a deficient number, since it is larger than the sum of its proper divisors (31538383).

1149858361 is an equidigital number, since it uses as much as digits as its factorization.

1149858361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12171.

The product of its digits is 207360, while the sum is 46.

The square root of 1149858361 is about 33909.5614981969. The cubic root of 1149858361 is about 1047.6465387388.

The spelling of 1149858361 in words is "one billion, one hundred forty-nine million, eight hundred fifty-eight thousand, three hundred sixty-one".