3518253821 has 2 divisors, whose sum is σ = 3518253822. Its totient is φ = 3518253820.

The previous prime is 3518253799. The next prime is 3518253859. The reversal of 3518253821 is 1283528153.

It is an a-pointer prime, because the next prime (3518253859) can be obtained adding 3518253821 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1949222500 + 1569031321 = 44150^2 + 39611^2 .

It is a cyclic number.

It is not a de Polignac number, because 3518253821 - 2²² = 3514059517 is a prime.

It is a super-2 number, since 2×3518253821² = 24756219897962200082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3518256821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1759126910 + 1759126911.

It is an arithmetic number, because the mean of its divisors is an integer number (1759126911).

Almost surely, 2^3518253821 is an apocalyptic number.

It is an amenable number.

3518253821 is a deficient number, since it is larger than the sum of its proper divisors (1).

3518253821 is an equidigital number, since it uses as much as digits as its factorization.

3518253821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57600, while the sum is 38.

The square root of 3518253821 is about 59314.8701507472. The cubic root of 3518253821 is about 1520.9294034671.

The spelling of 3518253821 in words is "three billion, five hundred eighteen million, two hundred fifty-three thousand, eight hundred twenty-one".