1149157205 has 16 divisors (see below), whose sum is σ = 1580394240. Its totient is φ = 785789952.

The previous prime is 1149157201. The next prime is 1149157271. The reversal of 1149157205 is 5027519411.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1149157205 - 2² = 1149157201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149157201) by changing a digit.

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, 33164 + ... + 58293.

It is an arithmetic number, because the mean of its divisors is an integer number (98774640).

Almost surely, 2^1149157205 is an apocalyptic number.

It is an amenable number.

1149157205 is a deficient number, since it is larger than the sum of its proper divisors (431237035).

1149157205 is an equidigital number, since it uses as much as digits as its factorization.

1149157205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91828.

The product of its (nonzero) digits is 12600, while the sum is 35.

The square root of 1149157205 is about 33899.2213037409. The cubic root of 1149157205 is about 1047.4335522127.

The spelling of 1149157205 in words is "one billion, one hundred forty-nine million, one hundred fifty-seven thousand, two hundred five".