3455928781 has 4 divisors (see below), whose sum is σ = 3463025632. Its totient is φ = 3448831932.

The previous prime is 3455928769. The next prime is 3455928823. The reversal of 3455928781 is 1878295543.

It is a happy number.

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: 1878295543 = 1201 ⋅1563943.

It is a cyclic number.

It is not a de Polignac number, because 3455928781 - 2⁹ = 3455928269 is a prime.

It is a super-2 number, since 2×3455928781² = 23886887478688291922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3455928731) 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, 3547695 + ... + 3548668.

It is an arithmetic number, because the mean of its divisors is an integer number (865756408).

Almost surely, 2^3455928781 is an apocalyptic number.

It is an amenable number.

3455928781 is a deficient number, since it is larger than the sum of its proper divisors (7096851).

3455928781 is an equidigital number, since it uses as much as digits as its factorization.

3455928781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7096850.

The product of its digits is 2419200, while the sum is 52.

The square root of 3455928781 is about 58787.1480937798. The cubic root of 3455928781 is about 1511.8948743491.

The spelling of 3455928781 in words is "three billion, four hundred fifty-five million, nine hundred twenty-eight thousand, seven hundred eighty-one".