201650638 has 8 divisors (see below), whose sum is σ = 345686832. Its totient is φ = 86421696.

The previous prime is 201650611. The next prime is 201650671. The reversal of 201650638 is 836056102.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7201795 + ... + 7201822.

It is an arithmetic number, because the mean of its divisors is an integer number (43210854).

Almost surely, 2^201650638 is an apocalyptic number.

201650638 is a deficient number, since it is larger than the sum of its proper divisors (144036194).

201650638 is a wasteful number, since it uses less digits than its factorization.

201650638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14403626.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 201650638 is about 14200.3745725245. The cubic root of 201650638 is about 586.4079734248.

The spelling of 201650638 in words is "two hundred one million, six hundred fifty thousand, six hundred thirty-eight".