1353021408 has 60 divisors (see below), whose sum is σ = 3979206000. Its totient is φ = 451006272.

The previous prime is 1353021389. The next prime is 1353021427. The reversal of 1353021408 is 8041203531.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1353021389) and next prime (1353021427).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 258408 + ... + 263591.

It is an arithmetic number, because the mean of its divisors is an integer number (66320100).

Almost surely, 2^1353021408 is an apocalyptic number.

1353021408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1353021408 is an abundant number, since it is smaller than the sum of its proper divisors (2626184592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1353021408 is an equidigital number, since it uses as much as digits as its factorization.

1353021408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522021 (or 522004 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1353021408 is about 36783.4393171710. The cubic root of 1353021408 is about 1106.0333509667.

Adding to 1353021408 its reverse (8041203531), we get a palindrome (9394224939).

The spelling of 1353021408 in words is "one billion, three hundred fifty-three million, twenty-one thousand, four hundred eight".