1020581326 has 8 divisors (see below), whose sum is σ = 1540623240. Its totient is φ = 507040248.

The previous prime is 1020581299. The next prime is 1020581327. The reversal of 1020581326 is 6231850201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1020581294 and 1020581303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020581327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1624816 + ... + 1625443.

It is an arithmetic number, because the mean of its divisors is an integer number (192577905).

Almost surely, 2^1020581326 is an apocalyptic number.

1020581326 is a deficient number, since it is larger than the sum of its proper divisors (520041914).

1020581326 is a wasteful number, since it uses less digits than its factorization.

1020581326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3250418.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1020581326 is about 31946.5385605389. The cubic root of 1020581326 is about 1006.8139072134.

The spelling of 1020581326 in words is "one billion, twenty million, five hundred eighty-one thousand, three hundred twenty-six".