3919420831 has 2 divisors, whose sum is σ = 3919420832. Its totient is φ = 3919420830.

The previous prime is 3919420829. The next prime is 3919420849. The reversal of 3919420831 is 1380249193.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3919420831 - 2¹ = 3919420829 is a prime.

It is a super-2 number, since 2×3919420831² = 30723719300953461122, which contains 22 as substring.

Together with 3919420829, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3919420811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1959710415 + 1959710416.

It is an arithmetic number, because the mean of its divisors is an integer number (1959710416).

Almost surely, 2^3919420831 is an apocalyptic number.

3919420831 is a deficient number, since it is larger than the sum of its proper divisors (1).

3919420831 is an equidigital number, since it uses as much as digits as its factorization.

3919420831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 3919420831 is about 62605.2779803748. The cubic root of 3919420831 is about 1576.6693754799.

It can be divided in two parts, 39194 and 20831, that added together give a square (60025 = 245²).

The spelling of 3919420831 in words is "three billion, nine hundred nineteen million, four hundred twenty thousand, eight hundred thirty-one".