3520999957 has 8 divisors (see below), whose sum is σ = 3618465336. Its totient is φ = 3423655872.

The previous prime is 3520999949. The next prime is 3520999967. The reversal of 3520999957 is 7599990253.

3520999957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1464286756 + 2056713201 = 38266^2 + 45351^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3520999957 - 2³ = 3520999949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3520999967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30183 + ... + 89179.

It is an arithmetic number, because the mean of its divisors is an integer number (452308167).

Almost surely, 2^3520999957 is an apocalyptic number.

3520999957 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

3520999957 is a deficient number, since it is larger than the sum of its proper divisors (97465379).

3520999957 is a wasteful number, since it uses less digits than its factorization.

3520999957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60647.

The product of its (nonzero) digits is 6889050, while the sum is 58.

The square root of 3520999957 is about 59338.0144342562. The cubic root of 3520999957 is about 1521.3250157020.

The spelling of 3520999957 in words is "three billion, five hundred twenty million, nine hundred ninety-nine thousand, nine hundred fifty-seven".