1649359 has 2 divisors, whose sum is σ = 1649360. Its totient is φ = 1649358.

The previous prime is 1649341. The next prime is 1649363. The reversal of 1649359 is 9539461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1649359 - 2⁵ = 1649327 is a prime.

It is a super-2 number, since 2×1649359² = 5440770221762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1649309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 824679 + 824680.

It is an arithmetic number, because the mean of its divisors is an integer number (824680).

2^1649359 is an apocalyptic number.

1649359 is a deficient number, since it is larger than the sum of its proper divisors (1).

1649359 is an equidigital number, since it uses as much as digits as its factorization.

1649359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 37.

The square root of 1649359 is about 1284.2737247176. The cubic root of 1649359 is about 118.1512710901.

The spelling of 1649359 in words is "one million, six hundred forty-nine thousand, three hundred fifty-nine".