1270218166 has 16 divisors (see below), whose sum is σ = 2178328320. Its totient is φ = 544176360.

The previous prime is 1270218163. The next prime is 1270218179. The reversal of 1270218166 is 6618120721.

It is a super-2 number, since 2×1270218166² = 3226908378472807112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1270218161) 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, 25711 + ... + 56581.

It is an arithmetic number, because the mean of its divisors is an integer number (136145520).

Almost surely, 2^1270218166 is an apocalyptic number.

1270218166 is a deficient number, since it is larger than the sum of its proper divisors (908110154).

1270218166 is a wasteful number, since it uses less digits than its factorization.

1270218166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33819.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 1270218166 is about 35640.1201737592. The cubic root of 1270218166 is about 1082.9941395103.

Adding to 1270218166 its reverse (6618120721), we get a palindrome (7888338887).

The spelling of 1270218166 in words is "one billion, two hundred seventy million, two hundred eighteen thousand, one hundred sixty-six".