1214135645 has 8 divisors (see below), whose sum is σ = 1471388760. Its totient is φ = 961691200.

The previous prime is 1214135627. The next prime is 1214135647. The reversal of 1214135645 is 5465314121.

It can be written as a sum of positive squares in 4 ways, for example, as 572070724 + 642064921 = 23918^2 + 25339^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1214135645 - 2⁶ = 1214135581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214135647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1201610 + ... + 1202619.

It is an arithmetic number, because the mean of its divisors is an integer number (183923595).

Almost surely, 2^1214135645 is an apocalyptic number.

It is an amenable number.

1214135645 is a deficient number, since it is larger than the sum of its proper divisors (257253115).

1214135645 is a wasteful number, since it uses less digits than its factorization.

1214135645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2404335.

The product of its digits is 14400, while the sum is 32.

The square root of 1214135645 is about 34844.4492710102. The cubic root of 1214135645 is about 1066.8148927585.

Adding to 1214135645 its reverse (5465314121), we get a palindrome (6679449766).

The spelling of 1214135645 in words is "one billion, two hundred fourteen million, one hundred thirty-five thousand, six hundred forty-five".