649914203 has 2 divisors, whose sum is σ = 649914204. Its totient is φ = 649914202.

The previous prime is 649914149. The next prime is 649914211. The reversal of 649914203 is 302419946.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-649914203 is a prime.

It is a super-2 number, since 2×649914203² = 844776942522250418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (649914283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324957101 + 324957102.

It is an arithmetic number, because the mean of its divisors is an integer number (324957102).

Almost surely, 2^649914203 is an apocalyptic number.

649914203 is a deficient number, since it is larger than the sum of its proper divisors (1).

649914203 is an equidigital number, since it uses as much as digits as its factorization.

649914203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 649914203 is about 25493.4148948312. The cubic root of 649914203 is about 866.2009904759.

It can be divided in two parts, 6499 and 14203, that added together give a palindrome (20702).

The spelling of 649914203 in words is "six hundred forty-nine million, nine hundred fourteen thousand, two hundred three".