1214722894 has 16 divisors (see below), whose sum is σ = 2271689856. Its totient is φ = 473268600.

The previous prime is 1214722891. The next prime is 1214722919. The reversal of 1214722894 is 4982274121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214722891) 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, 3943752 + ... + 3944059.

It is an arithmetic number, because the mean of its divisors is an integer number (141980616).

Almost surely, 2^1214722894 is an apocalyptic number.

1214722894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1214722894 is a deficient number, since it is larger than the sum of its proper divisors (1056966962).

1214722894 is a wasteful number, since it uses less digits than its factorization.

1214722894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7887831.

The product of its digits is 64512, while the sum is 40.

The square root of 1214722894 is about 34852.8749746703. The cubic root of 1214722894 is about 1066.9868628353.

The spelling of 1214722894 in words is "one billion, two hundred fourteen million, seven hundred twenty-two thousand, eight hundred ninety-four".