1214001509 has 48 divisors (see below), whose sum is σ = 1525248000. Its totient is φ = 964625760.

The previous prime is 1214001457. The next prime is 1214001511. The reversal of 1214001509 is 9051004121.

It is a happy number.

It is not a de Polignac number, because 1214001509 - 2²⁰ = 1212952933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214009509) 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 47 ways as a sum of consecutive naturals, for example, 9559004 + ... + 9559130.

It is an arithmetic number, because the mean of its divisors is an integer number (31776000).

Almost surely, 2^1214001509 is an apocalyptic number.

It is an amenable number.

1214001509 is a deficient number, since it is larger than the sum of its proper divisors (311246491).

1214001509 is an equidigital number, since it uses as much as digits as its factorization.

1214001509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 1214001509 is about 34842.5244349487. The cubic root of 1214001509 is about 1066.7756045748.

The spelling of 1214001509 in words is "one billion, two hundred fourteen million, one thousand, five hundred nine".