9001020002 has 16 divisors (see below), whose sum is σ = 14542011960. Its totient is φ = 4153773312.

The previous prime is 9001020001. The next prime is 9001020011. The reversal of 9001020002 is 2000201009.

It can be written as a sum of positive squares in 4 ways, for example, as 8962219561 + 38800441 = 94669^2 + 6229^2 .

It is a super-2 number, since 2×9001020002² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9001020001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235274 + ... + 270842.

Almost surely, 2^9001020002 is an apocalyptic number.

9001020002 is a deficient number, since it is larger than the sum of its proper divisors (5540991958).

9001020002 is a wasteful number, since it uses less digits than its factorization.

9001020002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45317.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 9001020002 is about 94873.7055353063. The cubic root of 9001020002 is about 2080.1624011820.

The spelling of 9001020002 in words is "nine billion, one million, twenty thousand, two".