1226305145 has 16 divisors (see below), whose sum is σ = 1653668352. Its totient is φ = 866205120.

The previous prime is 1226305141. The next prime is 1226305151. The reversal of 1226305145 is 5415036221.

It is not a de Polignac number, because 1226305145 - 2² = 1226305141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1226305141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 408641 + ... + 411630.

It is an arithmetic number, because the mean of its divisors is an integer number (103354272).

Almost surely, 2^1226305145 is an apocalyptic number.

It is an amenable number.

1226305145 is a deficient number, since it is larger than the sum of its proper divisors (427363207).

1226305145 is a wasteful number, since it uses less digits than its factorization.

1226305145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820312.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 1226305145 is about 35018.6399650243. The cubic root of 1226305145 is about 1070.3673426474.

The spelling of 1226305145 in words is "one billion, two hundred twenty-six million, three hundred five thousand, one hundred forty-five".