1651020606 has 24 divisors (see below), whose sum is σ = 3653324064. Its totient is φ = 538630560.

The previous prime is 1651020601. The next prime is 1651020611. The reversal of 1651020606 is 6060201561.

It is a happy number.

1651020606 is a `hidden beast` number, since 1 + 6 + 51 + 0 + 2 + 0 + 606 = 666.

It is an interprime number because it is at equal distance from previous prime (1651020601) and next prime (1651020611).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1651020606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1651020601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 974935 + ... + 976626.

It is an arithmetic number, because the mean of its divisors is an integer number (152221836).

Almost surely, 2^1651020606 is an apocalyptic number.

1651020606 is an abundant number, since it is smaller than the sum of its proper divisors (2002303458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1651020606 is a wasteful number, since it uses less digits than its factorization.

1651020606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1951616 (or 1951613 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1651020606 is about 40632.7528725288. The cubic root of 1651020606 is about 1181.9093396757.

The spelling of 1651020606 in words is "one billion, six hundred fifty-one million, twenty thousand, six hundred six".