1000656001 has 2 divisors, whose sum is σ = 1000656002. Its totient is φ = 1000656000.

The previous prime is 1000655993. The next prime is 1000656029. The reversal of 1000656001 is 1006560001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 952339600 + 48316401 = 30860^2 + 6951^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000656001 - 2³ = 1000655993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1000656001.

It is not a weakly prime, because it can be changed into another prime (1000656031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500328000 + 500328001.

It is an arithmetic number, because the mean of its divisors is an integer number (500328001).

Almost surely, 2^1000656001 is an apocalyptic number.

It is an amenable number.

1000656001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000656001 is an equidigital number, since it uses as much as digits as its factorization.

1000656001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1000656001 is about 31633.1471877207. The cubic root of 1000656001 is about 1000.2186192022.

The spelling of 1000656001 in words is "one billion, six hundred fifty-six thousand, one".