1040521851 has 24 divisors (see below), whose sum is σ = 1553071104. Its totient is φ = 670607280.

The previous prime is 1040521849. The next prime is 1040521879. The reversal of 1040521851 is 1581250401.

It is not a de Polignac number, because 1040521851 - 2¹ = 1040521849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1040521831) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 497530 + ... + 499616.

It is an arithmetic number, because the mean of its divisors is an integer number (64711296).

Almost surely, 2^1040521851 is an apocalyptic number.

1040521851 is a deficient number, since it is larger than the sum of its proper divisors (512549253).

1040521851 is a wasteful number, since it uses less digits than its factorization.

1040521851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3911 (or 3908 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

The square root of 1040521851 is about 32257.1209347642. The cubic root of 1040521851 is about 1013.3288364610.

The spelling of 1040521851 in words is "one billion, forty million, five hundred twenty-one thousand, eight hundred fifty-one".