1215882493 has 8 divisors (see below), whose sum is σ = 1427136512. Its totient is φ = 1014017616.

The previous prime is 1215882467. The next prime is 1215882509. The reversal of 1215882493 is 3942885121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1215882493 - 2⁵ = 1215882461 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 (1215882413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2347005 + ... + 2347522.

It is an arithmetic number, because the mean of its divisors is an integer number (178392064).

Almost surely, 2^1215882493 is an apocalyptic number.

It is an amenable number.

1215882493 is a deficient number, since it is larger than the sum of its proper divisors (211254019).

1215882493 is an equidigital number, since it uses as much as digits as its factorization.

1215882493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4694571.

The product of its digits is 138240, while the sum is 43.

The square root of 1215882493 is about 34869.5066354544. The cubic root of 1215882493 is about 1067.3262772549.

The spelling of 1215882493 in words is "one billion, two hundred fifteen million, eight hundred eighty-two thousand, four hundred ninety-three".