1912457 has 2 divisors, whose sum is σ = 1912458. Its totient is φ = 1912456.

The previous prime is 1912453. The next prime is 1912459. The reversal of 1912457 is 7542191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1901641 + 10816 = 1379^2 + 104^2 .

It is a cyclic number.

It is not a de Polignac number, because 1912457 - 2² = 1912453 is a prime.

Together with 1912459, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1912451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 956228 + 956229.

It is an arithmetic number, because the mean of its divisors is an integer number (956229).

2^1912457 is an apocalyptic number.

It is an amenable number.

1912457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1912457 is an equidigital number, since it uses as much as digits as its factorization.

1912457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 29.

The square root of 1912457 is about 1382.9161218237. The cubic root of 1912457 is about 124.1263237453.

The spelling of 1912457 in words is "one million, nine hundred twelve thousand, four hundred fifty-seven".