1149227905 has 16 divisors (see below), whose sum is σ = 1580033664. Its totient is φ = 786067200.

The previous prime is 1149227903. The next prime is 1149227929. The reversal of 1149227905 is 5097229411.

It is a happy number.

It is not a de Polignac number, because 1149227905 - 2¹ = 1149227903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1149227903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26907 + ... + 54976.

It is an arithmetic number, because the mean of its divisors is an integer number (98752104).

Almost surely, 2^1149227905 is an apocalyptic number.

It is an amenable number.

1149227905 is a deficient number, since it is larger than the sum of its proper divisors (430805759).

1149227905 is an equidigital number, since it uses as much as digits as its factorization.

1149227905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82296.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 1149227905 is about 33900.2640845171. The cubic root of 1149227905 is about 1047.4550323122.

The spelling of 1149227905 in words is "one billion, one hundred forty-nine million, two hundred twenty-seven thousand, nine hundred five".