1540783 has 2 divisors, whose sum is σ = 1540784. Its totient is φ = 1540782.

The previous prime is 1540753. The next prime is 1540787. The reversal of 1540783 is 3870451.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1540783 - 2⁵ = 1540751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1540787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770391 + 770392.

It is an arithmetic number, because the mean of its divisors is an integer number (770392).

2^1540783 is an apocalyptic number.

1540783 is a deficient number, since it is larger than the sum of its proper divisors (1).

1540783 is an equidigital number, since it uses as much as digits as its factorization.

1540783 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 1540783 is about 1241.2828041989. The cubic root of 1540783 is about 115.4996033294.

The spelling of 1540783 in words is "one million, five hundred forty thousand, seven hundred eighty-three".