1205106738 has 16 divisors (see below), whose sum is σ = 2629323936. Its totient is φ = 365183840.

The previous prime is 1205106737. The next prime is 1205106751. The reversal of 1205106738 is 8376015021.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 1205106699 and 1205106708.

It is not an unprimeable number, because it can be changed into a prime (1205106733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9129531 + ... + 9129662.

It is an arithmetic number, because the mean of its divisors is an integer number (164332746).

Almost surely, 2^1205106738 is an apocalyptic number.

1205106738 is an abundant number, since it is smaller than the sum of its proper divisors (1424217198).

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

1205106738 is a wasteful number, since it uses less digits than its factorization.

1205106738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18259209.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 1205106738 is about 34714.6473120497. The cubic root of 1205106738 is about 1064.1638578037.

The spelling of 1205106738 in words is "one billion, two hundred five million, one hundred six thousand, seven hundred thirty-eight".