900838643 has 2 divisors, whose sum is σ = 900838644. Its totient is φ = 900838642.

The previous prime is 900838637. The next prime is 900838649. The reversal of 900838643 is 346838009.

It is a balanced prime because it is at equal distance from previous prime (900838637) and next prime (900838649).

It is a cyclic number.

It is not a de Polignac number, because 900838643 - 2¹² = 900834547 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 900838643.

It is not a weakly prime, because it can be changed into another prime (900838649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450419321 + 450419322.

It is an arithmetic number, because the mean of its divisors is an integer number (450419322).

Almost surely, 2^900838643 is an apocalyptic number.

900838643 is a deficient number, since it is larger than the sum of its proper divisors (1).

900838643 is an equidigital number, since it uses as much as digits as its factorization.

900838643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 900838643 is about 30013.9741287288. The cubic root of 900838643 is about 965.7891807331.

The spelling of 900838643 in words is "nine hundred million, eight hundred thirty-eight thousand, six hundred forty-three".