1355523663 has 16 divisors (see below), whose sum is σ = 1987808256. Its totient is φ = 816419040.

The previous prime is 1355523619. The next prime is 1355523677. The reversal of 1355523663 is 3663255531.

1355523663 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1355523663 - 2²¹ = 1353426511 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355523613) 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, 367923 + ... + 371588.

It is an arithmetic number, because the mean of its divisors is an integer number (124238016).

Almost surely, 2^1355523663 is an apocalyptic number.

1355523663 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1355523663 is a deficient number, since it is larger than the sum of its proper divisors (632284593).

1355523663 is a wasteful number, since it uses less digits than its factorization.

1355523663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739574.

The product of its digits is 243000, while the sum is 39.

The square root of 1355523663 is about 36817.4369422968. The cubic root of 1355523663 is about 1106.7147575612.

The spelling of 1355523663 in words is "one billion, three hundred fifty-five million, five hundred twenty-three thousand, six hundred sixty-three".