3521977368 has 256 divisors, whose sum is σ = 11128320000. Its totient is φ = 904310784.

The previous prime is 3521977357. The next prime is 3521977379. The reversal of 3521977368 is 8637791253.

It is an interprime number because it is at equal distance from previous prime (3521977357) and next prime (3521977379).

It is a self number, because there is not a number n which added to its sum of digits gives 3521977368.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23637358 + ... + 23637506.

It is an arithmetic number, because the mean of its divisors is an integer number (43470000).

Almost surely, 2^3521977368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3521977368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5564160000).

3521977368 is an abundant number, since it is smaller than the sum of its proper divisors (7606342632).

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

3521977368 is a wasteful number, since it uses less digits than its factorization.

3521977368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394 (or 390 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 51.

The square root of 3521977368 is about 59346.2498225457. The cubic root of 3521977368 is about 1521.4657732760.

The spelling of 3521977368 in words is "three billion, five hundred twenty-one million, nine hundred seventy-seven thousand, three hundred sixty-eight".