1051630812 has 72 divisors (see below), whose sum is σ = 2883377952. Its totient is φ = 321868800.

The previous prime is 1051630751. The next prime is 1051630837. The reversal of 1051630812 is 2180361501.

1051630812 is a `hidden beast` number, since 10 + 5 + 1 + 630 + 8 + 12 = 666.

It is a super-2 number, since 2×1051630812² = 2211854729495558688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 4137 + ... + 46047.

It is an arithmetic number, because the mean of its divisors is an integer number (40046916).

Almost surely, 2^1051630812 is an apocalyptic number.

1051630812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1051630812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1441688976).

1051630812 is an abundant number, since it is smaller than the sum of its proper divisors (1831747140).

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

1051630812 is a wasteful number, since it uses less digits than its factorization.

1051630812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41979 (or 41974 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1051630812 is about 32428.8577042115. The cubic root of 1051630812 is about 1016.9222914088.

It can be divided in two parts, 10516 and 30812, that added together give a triangular number (41328 = T₂₈₇).

The spelling of 1051630812 in words is "one billion, fifty-one million, six hundred thirty thousand, eight hundred twelve".