1226670138 has 12 divisors (see below), whose sum is σ = 2657785338. Its totient is φ = 408890040.

The previous prime is 1226670119. The next prime is 1226670143. The reversal of 1226670138 is 8310766221.

It can be written as a sum of positive squares in only one way, i.e., 1211248809 + 15421329 = 34803^2 + 3927^2 .

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, 34074153 + ... + 34074188.

Almost surely, 2^1226670138 is an apocalyptic number.

1226670138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1226670138 is an abundant number, since it is smaller than the sum of its proper divisors (1431115200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1226670138 is a wasteful number, since it uses less digits than its factorization.

1226670138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68148349 (or 68148346 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 1226670138 is about 35023.8509875770. The cubic root of 1226670138 is about 1070.4735255268.

The spelling of 1226670138 in words is "one billion, two hundred twenty-six million, six hundred seventy thousand, one hundred thirty-eight".