3520140345 has 12 divisors (see below), whose sum is σ = 6101576676. Its totient is φ = 1877408160.

The previous prime is 3520140301. The next prime is 3520140353. The reversal of 3520140345 is 5430410253.

It can be written as a sum of positive squares in 2 ways, for example, as 1485408681 + 2034731664 = 38541^2 + 45108^2 .

It is not a de Polignac number, because 3520140345 - 2¹⁴ = 3520123961 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39112626 + ... + 39112715.

It is an arithmetic number, because the mean of its divisors is an integer number (508464723).

Almost surely, 2^3520140345 is an apocalyptic number.

It is an amenable number.

3520140345 is a deficient number, since it is larger than the sum of its proper divisors (2581436331).

3520140345 is a wasteful number, since it uses less digits than its factorization.

3520140345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78225352 (or 78225349 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 3520140345 is about 59330.7706422224. The cubic root of 3520140345 is about 1521.2012009057.

Adding to 3520140345 its reverse (5430410253), we get a palindrome (8950550598).

The spelling of 3520140345 in words is "three billion, five hundred twenty million, one hundred forty thousand, three hundred forty-five".