1214155605 has 16 divisors (see below), whose sum is σ = 2092083840. Its totient is φ = 597738048.

The previous prime is 1214155603. The next prime is 1214155619. The reversal of 1214155605 is 5065514121.

It is not a de Polignac number, because 1214155605 - 2¹ = 1214155603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214155601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3113025 + ... + 3113414.

It is an arithmetic number, because the mean of its divisors is an integer number (130755240).

Almost surely, 2^1214155605 is an apocalyptic number.

1214155605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1214155605 is a deficient number, since it is larger than the sum of its proper divisors (877928235).

1214155605 is a wasteful number, since it uses less digits than its factorization.

1214155605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6226460.

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 1214155605 is about 34844.7356856097. The cubic root of 1214155605 is about 1066.8207387578.

Adding to 1214155605 its reverse (5065514121), we get a palindrome (6279669726).

It can be divided in two parts, 121 and 4155605, that multiplied together give a palindrome (502828205).

The spelling of 1214155605 in words is "one billion, two hundred fourteen million, one hundred fifty-five thousand, six hundred five".