3499618878 has 256 divisors, whose sum is σ = 9928396800. Its totient is φ = 890818560.

The previous prime is 3499618853. The next prime is 3499618901. The reversal of 3499618878 is 8788169943.

3499618878 is a `hidden beast` number, since 3 + 4 + 9 + 9 + 618 + 8 + 7 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 9748063 + ... + 9748421.

It is an arithmetic number, because the mean of its divisors is an integer number (38782800).

Almost surely, 2^3499618878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3499618878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4964198400).

3499618878 is an abundant number, since it is smaller than the sum of its proper divisors (6428777922).

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

3499618878 is a wasteful number, since it uses less digits than its factorization.

3499618878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472 (or 466 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 63.

The square root of 3499618878 is about 59157.5766745055. The cubic root of 3499618878 is about 1518.2393738963.

The spelling of 3499618878 in words is "three billion, four hundred ninety-nine million, six hundred eighteen thousand, eight hundred seventy-eight".