3453121857 has 4 divisors (see below), whose sum is σ = 4604162480. Its totient is φ = 2302081236.

The previous prime is 3453121811. The next prime is 3453121871. The reversal of 3453121857 is 7581213543.

It is a happy number.

3453121857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 7581213543 = 3 ⋅2527071181.

It is not a de Polignac number, because 3453121857 - 2¹¹ = 3453119809 is a prime.

It is a super-2 number, since 2×3453121857² = 23848101118582256898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3453121877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 575520307 + ... + 575520312.

It is an arithmetic number, because the mean of its divisors is an integer number (1151040620).

Almost surely, 2^3453121857 is an apocalyptic number.

It is an amenable number.

3453121857 is a deficient number, since it is larger than the sum of its proper divisors (1151040623).

3453121857 is a wasteful number, since it uses less digits than its factorization.

3453121857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151040622.

The product of its digits is 100800, while the sum is 39.

The square root of 3453121857 is about 58763.2696248260. The cubic root of 3453121857 is about 1511.4854404232.

The spelling of 3453121857 in words is "three billion, four hundred fifty-three million, one hundred twenty-one thousand, eight hundred fifty-seven".