1215010449 has 21 divisors (see below), whose sum is σ = 1823094489. Its totient is φ = 809379540.

The previous prime is 1215010439. The next prime is 1215010469. The reversal of 1215010449 is 9440105121.

The square root of 1215010449 is 34857.

It is a perfect power (a square), and thus also a powerful number.

1215010449 is a `hidden beast` number, since 1 + 215 + 0 + 1 + 0 + 449 = 666.

It is not a de Polignac number, because 1215010449 - 2¹¹ = 1215008401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1215010439) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 940494 + ... + 941784.

Almost surely, 2^1215010449 is an apocalyptic number.

1215010449 is the 34857-th square number.

1215010449 is the 17429-th centered octagonal number.

It is an amenable number.

1215010449 is a deficient number, since it is larger than the sum of its proper divisors (608084040).

1215010449 is an frugal number, since it uses more digits than its factorization.

1215010449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2600 (or 1294 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The cubic root of 1215010449 is about 1067.0710502665.

The spelling of 1215010449 in words is "one billion, two hundred fifteen million, ten thousand, four hundred forty-nine".