1051921530 has 48 divisors (see below), whose sum is σ = 2983634784. Its totient is φ = 255011040.

The previous prime is 1051921511. The next prime is 1051921531. The reversal of 1051921530 is 351291501.

1051921530 is a `hidden beast` number, since 105 + 1 + 9 + 21 + 530 = 666.

It is a super-2 number, since 2×1051921530² = 2213077810555081800, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1051921494 and 1051921503.

It is not an unprimeable number, because it can be changed into a prime (1051921531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 530284 + ... + 532263.

It is an arithmetic number, because the mean of its divisors is an integer number (62159058).

Almost surely, 2^1051921530 is an apocalyptic number.

1051921530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1051921530 is an abundant number, since it is smaller than the sum of its proper divisors (1931713254).

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

1051921530 is a wasteful number, since it uses less digits than its factorization.

1051921530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062571 (or 1062568 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 27.

The square root of 1051921530 is about 32433.3397910237. The cubic root of 1051921530 is about 1017.0159904436.

The spelling of 1051921530 in words is "one billion, fifty-one million, nine hundred twenty-one thousand, five hundred thirty".