3781955423 has 2 divisors, whose sum is σ = 3781955424. Its totient is φ = 3781955422.

The previous prime is 3781955417. The next prime is 3781955447. The reversal of 3781955423 is 3245591873.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3781955423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3781955413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1890977711 + 1890977712.

It is an arithmetic number, because the mean of its divisors is an integer number (1890977712).

Almost surely, 2^3781955423 is an apocalyptic number.

3781955423 is a deficient number, since it is larger than the sum of its proper divisors (1).

3781955423 is an equidigital number, since it uses as much as digits as its factorization.

3781955423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 907200, while the sum is 47.

The square root of 3781955423 is about 61497.6050184070. The cubic root of 3781955423 is about 1558.0167959539.

The spelling of 3781955423 in words is "three billion, seven hundred eighty-one million, nine hundred fifty-five thousand, four hundred twenty-three".