1954691 has 2 divisors, whose sum is σ = 1954692. Its totient is φ = 1954690.

The previous prime is 1954679. The next prime is 1954699. The reversal of 1954691 is 1964591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1954691 - 2⁶ = 1954627 is a prime.

It is not a weakly prime, because it can be changed into another prime (1954699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 977345 + 977346.

It is an arithmetic number, because the mean of its divisors is an integer number (977346).

2^1954691 is an apocalyptic number.

1954691 is a deficient number, since it is larger than the sum of its proper divisors (1).

1954691 is an equidigital number, since it uses as much as digits as its factorization.

1954691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 35.

The square root of 1954691 is about 1398.1026428700. The cubic root of 1954691 is about 125.0333990752.

The spelling of 1954691 in words is "one million, nine hundred fifty-four thousand, six hundred ninety-one".