1161500099 has 2 divisors, whose sum is σ = 1161500100. Its totient is φ = 1161500098.

The previous prime is 1161500089. The next prime is 1161500117. The reversal of 1161500099 is 9900051611.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1161500099 - 2²⁸ = 893064643 is a prime.

It is not a weakly prime, because it can be changed into another prime (1161500009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580750049 + 580750050.

It is an arithmetic number, because the mean of its divisors is an integer number (580750050).

Almost surely, 2^1161500099 is an apocalyptic number.

1161500099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161500099 is an equidigital number, since it uses as much as digits as its factorization.

1161500099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 32.

The square root of 1161500099 is about 34080.7878283352. The cubic root of 1161500099 is about 1051.1703047967.

The spelling of 1161500099 in words is "one billion, one hundred sixty-one million, five hundred thousand, ninety-nine".