1214153729 has 2 divisors, whose sum is σ = 1214153730. Its totient is φ = 1214153728.

The previous prime is 1214153723. The next prime is 1214153771. The reversal of 1214153729 is 9273514121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 945685504 + 268468225 = 30752^2 + 16385^2 .

It is a cyclic number.

It is not a de Polignac number, because 1214153729 - 2¹⁶ = 1214088193 is a prime.

It is not a weakly prime, because it can be changed into another prime (1214153723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607076864 + 607076865.

It is an arithmetic number, because the mean of its divisors is an integer number (607076865).

Almost surely, 2^1214153729 is an apocalyptic number.

It is an amenable number.

1214153729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1214153729 is an equidigital number, since it uses as much as digits as its factorization.

1214153729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 35.

The square root of 1214153729 is about 34844.7087661814. The cubic root of 1214153729 is about 1066.8201893069.

The spelling of 1214153729 in words is "one billion, two hundred fourteen million, one hundred fifty-three thousand, seven hundred twenty-nine".