1228136495 has 4 divisors (see below), whose sum is σ = 1473763800. Its totient is φ = 982509192.

The previous prime is 1228136489. The next prime is 1228136513. The reversal of 1228136495 is 5946318221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5946318221 = 47303 ⋅125707.

It is a cyclic number.

It is not a de Polignac number, because 1228136495 - 2¹⁴ = 1228120111 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122813645 + ... + 122813654.

It is an arithmetic number, because the mean of its divisors is an integer number (368440950).

Almost surely, 2^1228136495 is an apocalyptic number.

1228136495 is a deficient number, since it is larger than the sum of its proper divisors (245627305).

1228136495 is an equidigital number, since it uses as much as digits as its factorization.

1228136495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245627304.

The product of its digits is 103680, while the sum is 41.

The square root of 1228136495 is about 35044.7784270353. The cubic root of 1228136495 is about 1070.8999023889.

The spelling of 1228136495 in words is "one billion, two hundred twenty-eight million, one hundred thirty-six thousand, four hundred ninety-five".