1226561036 has 18 divisors (see below), whose sum is σ = 2265403140. Its totient is φ = 581001912.

The previous prime is 1226560967. The next prime is 1226561053. The reversal of 1226561036 is 6301656221.

It is a junction number, because it is equal to n+sod(n) for n = 1226560993 and 1226561011.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 423266 + ... + 426153.

It is an arithmetic number, because the mean of its divisors is an integer number (125855730).

Almost surely, 2^1226561036 is an apocalyptic number.

It is an amenable number.

1226561036 is a deficient number, since it is larger than the sum of its proper divisors (1038842104).

1226561036 is a wasteful number, since it uses less digits than its factorization.

1226561036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849461 (or 849440 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 1226561036 is about 35022.2934143382. The cubic root of 1226561036 is about 1070.4417880446.

The spelling of 1226561036 in words is "one billion, two hundred twenty-six million, five hundred sixty-one thousand, thirty-six".