1355669520 has 160 divisors (see below), whose sum is σ = 4281368832. Its totient is φ = 354809856.

The previous prime is 1355669509. The next prime is 1355669521. The reversal of 1355669520 is 259665531.

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

It is not an unprimeable number, because it can be changed into a prime (1355669521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4276402 + ... + 4276718.

Almost surely, 2^1355669520 is an apocalyptic number.

1355669520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1355669520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2140684416).

1355669520 is an abundant number, since it is smaller than the sum of its proper divisors (2925699312).

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

1355669520 is a wasteful number, since it uses less digits than its factorization.

1355669520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609 (or 603 counting only the distinct ones).

The product of its (nonzero) digits is 243000, while the sum is 42.

The square root of 1355669520 is about 36819.4177031631. The cubic root of 1355669520 is about 1106.7544510291.

The spelling of 1355669520 in words is "one billion, three hundred fifty-five million, six hundred sixty-nine thousand, five hundred twenty".