1491967 has 2 divisors, whose sum is σ = 1491968. Its totient is φ = 1491966.

The previous prime is 1491961. The next prime is 1491977. The reversal of 1491967 is 7691941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1491967 - 2⁷ = 1491839 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1491961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 745983 + 745984.

It is an arithmetic number, because the mean of its divisors is an integer number (745984).

2^1491967 is an apocalyptic number.

1491967 is a deficient number, since it is larger than the sum of its proper divisors (1).

1491967 is an equidigital number, since it uses as much as digits as its factorization.

1491967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 37.

The square root of 1491967 is about 1221.4610104297. The cubic root of 1491967 is about 114.2667141777.

It can be divided in two parts, 149 and 1967, that added together give a square (2116 = 46²).

The spelling of 1491967 in words is "one million, four hundred ninety-one thousand, nine hundred sixty-seven".