1353646644 has 48 divisors (see below), whose sum is σ = 3611586048. Its totient is φ = 386556768.

The previous prime is 1353646643. The next prime is 1353646649. The reversal of 1353646644 is 4466463531.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 1353646596 and 1353646605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1353646643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256359 + ... + 261585.

It is an arithmetic number, because the mean of its divisors is an integer number (75241376).

Almost surely, 2^1353646644 is an apocalyptic number.

1353646644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1353646644 is an abundant number, since it is smaller than the sum of its proper divisors (2257939404).

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

1353646644 is a wasteful number, since it uses less digits than its factorization.

1353646644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8324 (or 8322 counting only the distinct ones).

The product of its digits is 622080, while the sum is 42.

The square root of 1353646644 is about 36791.9372145583. The cubic root of 1353646644 is about 1106.2036920448.

The spelling of 1353646644 in words is "one billion, three hundred fifty-three million, six hundred forty-six thousand, six hundred forty-four".