1001820112 has 10 divisors (see below), whose sum is σ = 1941026498. Its totient is φ = 500910048.

The previous prime is 1001820101. The next prime is 1001820139. The reversal of 1001820112 is 2110281001.

It can be written as a sum of positive squares in only one way, i.e., 565678656 + 436141456 = 23784^2 + 20884^2 .

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 62613757 = 1001820112 / (1 + 0 + 0 + 1 + 8 + 2 + 0 + 1 + 1 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31306863 + ... + 31306894.

Almost surely, 2^1001820112 is an apocalyptic number.

It is an amenable number.

1001820112 is a deficient number, since it is larger than the sum of its proper divisors (939206386).

1001820112 is an equidigital number, since it uses as much as digits as its factorization.

1001820112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62613765 (or 62613759 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

The square root of 1001820112 is about 31651.5420161483. The cubic root of 1001820112 is about 1000.6063362820.

The spelling of 1001820112 in words is "one billion, one million, eight hundred twenty thousand, one hundred twelve".