1214709481 has 4 divisors (see below), whose sum is σ = 1215868500. Its totient is φ = 1213550464.

The previous prime is 1214709479. The next prime is 1214709569. The reversal of 1214709481 is 1849074121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1849074121 = 23 ⋅80394527.

It can be written as a sum of positive squares in 2 ways, for example, as 1069290000 + 145419481 = 32700^2 + 12059^2 .

It is a cyclic number.

It is not a de Polignac number, because 1214709481 - 2¹ = 1214709479 is a prime.

It is a super-2 number, since 2×1214709481² = 2951038246462578722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1214709481.

It is not an unprimeable number, because it can be changed into a prime (1214709401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 577936 + ... + 580033.

It is an arithmetic number, because the mean of its divisors is an integer number (303967125).

Almost surely, 2^1214709481 is an apocalyptic number.

It is an amenable number.

1214709481 is a deficient number, since it is larger than the sum of its proper divisors (1159019).

1214709481 is a wasteful number, since it uses less digits than its factorization.

1214709481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159018.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 1214709481 is about 34852.6825509888. The cubic root of 1214709481 is about 1066.9829355892.

The spelling of 1214709481 in words is "one billion, two hundred fourteen million, seven hundred nine thousand, four hundred eighty-one".