1091612153 has 2 divisors, whose sum is σ = 1091612154. Its totient is φ = 1091612152.

The previous prime is 1091612129. The next prime is 1091612183. The reversal of 1091612153 is 3512161901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 916393984 + 175218169 = 30272^2 + 13237^2 .

It is a cyclic number.

It is not a de Polignac number, because 1091612153 - 2³⁰ = 17870329 is a prime.

It is not a weakly prime, because it can be changed into another prime (1091612183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545806076 + 545806077.

It is an arithmetic number, because the mean of its divisors is an integer number (545806077).

Almost surely, 2^1091612153 is an apocalyptic number.

It is an amenable number.

1091612153 is a deficient number, since it is larger than the sum of its proper divisors (1).

1091612153 is an equidigital number, since it uses as much as digits as its factorization.

1091612153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 1091612153 is about 33039.5543704815. The cubic root of 1091612153 is about 1029.6495974005.

The spelling of 1091612153 in words is "one billion, ninety-one million, six hundred twelve thousand, one hundred fifty-three".