1051821936 has 200 divisors, whose sum is σ = 3362396400. Its totient is φ = 314772480.

The previous prime is 1051821929. The next prime is 1051821937. The reversal of 1051821936 is 6391281501.

It is a super-2 number, since 2×1051821936² = 2212658770101576192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1051821936.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051821937) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1268370 + ... + 1269198.

It is an arithmetic number, because the mean of its divisors is an integer number (16811982).

Almost surely, 2^1051821936 is an apocalyptic number.

1051821936 is a gapful number since it is divisible by the number (16) 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 1051821936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1681198200).

1051821936 is an abundant number, since it is smaller than the sum of its proper divisors (2310574464).

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

1051821936 is a wasteful number, since it uses less digits than its factorization.

1051821936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949 (or 934 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 1051821936 is about 32431.8043901353. The cubic root of 1051821936 is about 1016.9838930281.

The spelling of 1051821936 in words is "one billion, fifty-one million, eight hundred twenty-one thousand, nine hundred thirty-six".