1229158087 has 2 divisors, whose sum is σ = 1229158088. Its totient is φ = 1229158086.

The previous prime is 1229158037. The next prime is 1229158097. The reversal of 1229158087 is 7808519221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1229158087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1229158027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614579043 + 614579044.

It is an arithmetic number, because the mean of its divisors is an integer number (614579044).

Almost surely, 2^1229158087 is an apocalyptic number.

1229158087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1229158087 is an equidigital number, since it uses as much as digits as its factorization.

1229158087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 43.

The square root of 1229158087 is about 35059.3509209740. The cubic root of 1229158087 is about 1071.1967530982.

The spelling of 1229158087 in words is "one billion, two hundred twenty-nine million, one hundred fifty-eight thousand, eighty-seven".