1214509971 has 16 divisors (see below), whose sum is σ = 1769914368. Its totient is φ = 737462400.

The previous prime is 1214509949. The next prime is 1214509987. The reversal of 1214509971 is 1799054121.

It is not a de Polignac number, because 1214509971 - 2⁷ = 1214509843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1214509271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 382515 + ... + 385676.

It is an arithmetic number, because the mean of its divisors is an integer number (110619648).

Almost surely, 2^1214509971 is an apocalyptic number.

1214509971 is a deficient number, since it is larger than the sum of its proper divisors (555404397).

1214509971 is a wasteful number, since it uses less digits than its factorization.

1214509971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768242.

The product of its (nonzero) digits is 22680, while the sum is 39.

The square root of 1214509971 is about 34849.8202434388. The cubic root of 1214509971 is about 1066.9245168412.

The spelling of 1214509971 in words is "one billion, two hundred fourteen million, five hundred nine thousand, nine hundred seventy-one".