1214543650 has 24 divisors (see below), whose sum is σ = 2377950480. Its totient is φ = 460247760.

The previous prime is 1214543647. The next prime is 1214543651. The reversal of 1214543650 is 563454121.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (1214543651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 638284 + ... + 640183.

It is an arithmetic number, because the mean of its divisors is an integer number (99081270).

Almost surely, 2^1214543650 is an apocalyptic number.

1214543650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1214543650 is a deficient number, since it is larger than the sum of its proper divisors (1163406830).

1214543650 is a wasteful number, since it uses less digits than its factorization.

1214543650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278498 (or 1278493 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 1214543650 is about 34850.3034420075. The cubic root of 1214543650 is about 1066.9343788760.

Adding to 1214543650 its reverse (563454121), we get a palindrome (1777997771).

The spelling of 1214543650 in words is "one billion, two hundred fourteen million, five hundred forty-three thousand, six hundred fifty".