1912969 has 2 divisors, whose sum is σ = 1912970. Its totient is φ = 1912968.

The previous prime is 1912951. The next prime is 1912991. The reversal of 1912969 is 9692191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1742400 + 170569 = 1320^2 + 413^2 .

It is an emirp because it is prime and its reverse (9692191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1912969 - 2⁹ = 1912457 is a prime.

It is a super-2 number, since 2×1912969² = 7318900789922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1912919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 956484 + 956485.

It is an arithmetic number, because the mean of its divisors is an integer number (956485).

2^1912969 is an apocalyptic number.

It is an amenable number.

1912969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1912969 is an equidigital number, since it uses as much as digits as its factorization.

1912969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8748, while the sum is 37.

The square root of 1912969 is about 1383.1012255074. The cubic root of 1912969 is about 124.1373997254.

It can be divided in two parts, 191 and 2969, that added together give a triangular number (3160 = T₇₉).

The spelling of 1912969 in words is "one million, nine hundred twelve thousand, nine hundred sixty-nine".