1651606106 has 4 divisors (see below), whose sum is σ = 2477409162. Its totient is φ = 825803052.

The previous prime is 1651606091. The next prime is 1651606109. The reversal of 1651606106 is 6016061561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1525605481 + 126000625 = 39059^2 + 11225^2 .

It is not an unprimeable number, because it can be changed into a prime (1651606109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412901525 + ... + 412901528.

Almost surely, 2^1651606106 is an apocalyptic number.

1651606106 is a deficient number, since it is larger than the sum of its proper divisors (825803056).

1651606106 is an equidigital number, since it uses as much as digits as its factorization.

1651606106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825803055.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1651606106 is about 40639.9570127725. The cubic root of 1651606106 is about 1182.0490363235.

Adding to 1651606106 its reverse (6016061561), we get a palindrome (7667667667).

The spelling of 1651606106 in words is "one billion, six hundred fifty-one million, six hundred six thousand, one hundred six".