1650631612 has 48 divisors (see below), whose sum is σ = 3480906240. Its totient is φ = 669045312.

The previous prime is 1650631607. The next prime is 1650631627. The reversal of 1650631612 is 2161360561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 357873 + ... + 362455.

It is an arithmetic number, because the mean of its divisors is an integer number (72518880).

Almost surely, 2^1650631612 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1650631612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1740453120).

1650631612 is an abundant number, since it is smaller than the sum of its proper divisors (1830274628).

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

1650631612 is a wasteful number, since it uses less digits than its factorization.

1650631612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5290 (or 5288 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 1650631612 is about 40627.9658855818. The cubic root of 1650631612 is about 1181.8165098725.

The spelling of 1650631612 in words is "one billion, six hundred fifty million, six hundred thirty-one thousand, six hundred twelve".