1919461 has 2 divisors, whose sum is σ = 1919462. Its totient is φ = 1919460.

The previous prime is 1919459. The next prime is 1919471. The reversal of 1919461 is 1649191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1674436 + 245025 = 1294^2 + 495^2 .

It is a cyclic number.

It is not a de Polignac number, because 1919461 - 2¹ = 1919459 is a prime.

It is a super-3 number, since 3×1919461³ = 21215786293333107543, which contains 333 as substring.

Together with 1919459, 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 (1919431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 959730 + 959731.

It is an arithmetic number, because the mean of its divisors is an integer number (959731).

2^1919461 is an apocalyptic number.

It is an amenable number.

1919461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1919461 is an equidigital number, since it uses as much as digits as its factorization.

1919461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 31.

The square root of 1919461 is about 1385.4461375312. The cubic root of 1919461 is about 124.2776686057.

The spelling of 1919461 in words is "one million, nine hundred nineteen thousand, four hundred sixty-one".