1909463 has 2 divisors, whose sum is σ = 1909464. Its totient is φ = 1909462.

The previous prime is 1909451. The next prime is 1909477. The reversal of 1909463 is 3649091.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1909463 - 2⁶ = 1909399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1909363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 954731 + 954732.

It is an arithmetic number, because the mean of its divisors is an integer number (954732).

2^1909463 is an apocalyptic number.

1909463 is a deficient number, since it is larger than the sum of its proper divisors (1).

1909463 is an equidigital number, since it uses as much as digits as its factorization.

1909463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 1909463 is about 1381.8332026696. The cubic root of 1909463 is about 124.0615156100.

The spelling of 1909463 in words is "one million, nine hundred nine thousand, four hundred sixty-three".