3520812493 has 4 divisors (see below), whose sum is σ = 3840886368. Its totient is φ = 3200738620.

The previous prime is 3520812431. The next prime is 3520812517. The reversal of 3520812493 is 3942180253.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3942180253 = 11 ⋅358380023.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3520812493 is a prime.

It is a super-2 number, since 2×3520812493² = 24792241221729750098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3520812793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160036921 + ... + 160036942.

It is an arithmetic number, because the mean of its divisors is an integer number (960221592).

Almost surely, 2^3520812493 is an apocalyptic number.

It is an amenable number.

3520812493 is a deficient number, since it is larger than the sum of its proper divisors (320073875).

3520812493 is a wasteful number, since it uses less digits than its factorization.

3520812493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320073874.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 3520812493 is about 59336.4347850459. The cubic root of 3520812493 is about 1521.2980159162.

The spelling of 3520812493 in words is "three billion, five hundred twenty million, eight hundred twelve thousand, four hundred ninety-three".