1970491 has 2 divisors, whose sum is σ = 1970492. Its totient is φ = 1970490.

The previous prime is 1970473. The next prime is 1970513. The reversal of 1970491 is 1940791.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1970491 - 2⁵ = 1970459 is a prime.

It is not a weakly prime, because it can be changed into another prime (1970401) 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, 985245 + 985246.

It is an arithmetic number, because the mean of its divisors is an integer number (985246).

2^1970491 is an apocalyptic number.

1970491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1970491 is an equidigital number, since it uses as much as digits as its factorization.

1970491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 1970491 is about 1403.7417853722. The cubic root of 1970491 is about 125.3693820467.

The spelling of 1970491 in words is "one million, nine hundred seventy thousand, four hundred ninety-one".