1226406545 has 24 divisors (see below), whose sum is σ = 1843657704. Its totient is φ = 776272896.

The previous prime is 1226406527. The next prime is 1226406557. The reversal of 1226406545 is 5456046221.

It can be written as a sum of positive squares in 4 ways, for example, as 43665664 + 1182740881 = 6608^2 + 34391^2 .

It is not a de Polignac number, because 1226406545 - 2⁶ = 1226406481 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 189344 + ... + 195713.

It is an arithmetic number, because the mean of its divisors is an integer number (76819071).

Almost surely, 2^1226406545 is an apocalyptic number.

It is an amenable number.

1226406545 is a deficient number, since it is larger than the sum of its proper divisors (617251159).

1226406545 is a wasteful number, since it uses less digits than its factorization.

1226406545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385089 (or 385082 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 1226406545 is about 35020.0877354698. The cubic root of 1226406545 is about 1070.3968438031.

The spelling of 1226406545 in words is "one billion, two hundred twenty-six million, four hundred six thousand, five hundred forty-five".