3509861355 has 256 divisors, whose sum is σ = 8825241600. Its totient is φ = 1274641920.

The previous prime is 3509861353. The next prime is 3509861359. The reversal of 3509861355 is 5531689053.

3509861355 is a `hidden beast` number, since 3 + 509 + 8 + 6 + 135 + 5 = 666.

It is not a de Polignac number, because 3509861355 - 2¹ = 3509861353 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 3509861355.

It is not an unprimeable number, because it can be changed into a prime (3509861353) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 2566882 + ... + 2568248.

It is an arithmetic number, because the mean of its divisors is an integer number (34473600).

Almost surely, 2^3509861355 is an apocalyptic number.

3509861355 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3509861355 is an abundant number, since it is smaller than the sum of its proper divisors (5315380245).

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

3509861355 is a wasteful number, since it uses less digits than its factorization.

3509861355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431 (or 1425 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 45.

The square root of 3509861355 is about 59244.0828690933. The cubic root of 3509861355 is about 1519.7190955686.

The spelling of 3509861355 in words is "three billion, five hundred nine million, eight hundred sixty-one thousand, three hundred fifty-five".