1155250219 has 2 divisors, whose sum is σ = 1155250220. Its totient is φ = 1155250218.

The previous prime is 1155250183. The next prime is 1155250273. The reversal of 1155250219 is 9120525511.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1155250219 - 2⁷ = 1155250091 is a prime.

It is a super-2 number, since 2×1155250219² = 2669206136999095922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1155250289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577625109 + 577625110.

It is an arithmetic number, because the mean of its divisors is an integer number (577625110).

Almost surely, 2^1155250219 is an apocalyptic number.

1155250219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1155250219 is an equidigital number, since it uses as much as digits as its factorization.

1155250219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4500, while the sum is 31.

The square root of 1155250219 is about 33988.9720203480. The cubic root of 1155250219 is about 1049.2815096755.

The spelling of 1155250219 in words is "one billion, one hundred fifty-five million, two hundred fifty thousand, two hundred nineteen".