1356484821 has 8 divisors (see below), whose sum is σ = 1810206240. Its totient is φ = 903543312.

The previous prime is 1356484781. The next prime is 1356484897. The reversal of 1356484821 is 1284846531.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-1356484821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1356484421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190906 + ... + 197883.

It is an arithmetic number, because the mean of its divisors is an integer number (226275780).

Almost surely, 2^1356484821 is an apocalyptic number.

It is an amenable number.

1356484821 is a deficient number, since it is larger than the sum of its proper divisors (453721419).

1356484821 is a wasteful number, since it uses less digits than its factorization.

1356484821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389955.

The product of its digits is 184320, while the sum is 42.

The square root of 1356484821 is about 36830.4876562882. The cubic root of 1356484821 is about 1106.9762743100.

The spelling of 1356484821 in words is "one billion, three hundred fifty-six million, four hundred eighty-four thousand, eight hundred twenty-one".