3470820781 has 2 divisors, whose sum is σ = 3470820782. Its totient is φ = 3470820780.

The previous prime is 3470820757. The next prime is 3470820799. The reversal of 3470820781 is 1870280743.

3470820781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3014998281 + 455822500 = 54909^2 + 21350^2 .

It is a cyclic number.

It is not a de Polignac number, because 3470820781 - 2¹³ = 3470812589 is a prime.

It is a super-2 number, since 2×3470820781² = 24093193787642899922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3470820281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1735410390 + 1735410391.

It is an arithmetic number, because the mean of its divisors is an integer number (1735410391).

Almost surely, 2^3470820781 is an apocalyptic number.

It is an amenable number.

3470820781 is a deficient number, since it is larger than the sum of its proper divisors (1).

3470820781 is an equidigital number, since it uses as much as digits as its factorization.

3470820781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 3470820781 is about 58913.6722756272. The cubic root of 3470820781 is about 1514.0634062618.

The spelling of 3470820781 in words is "three billion, four hundred seventy million, eight hundred twenty thousand, seven hundred eighty-one".