900501641 has 16 divisors (see below), whose sum is σ = 1002867264. Its totient is φ = 803335104.

The previous prime is 900501629. The next prime is 900501643. The reversal of 900501641 is 146105009.

It is a de Polignac number, because none of the positive numbers 2^k-900501641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 900501641.

It is not an unprimeable number, because it can be changed into a prime (900501643) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 36410 + ... + 55916.

It is an arithmetic number, because the mean of its divisors is an integer number (62679204).

Almost surely, 2^900501641 is an apocalyptic number.

It is an amenable number.

900501641 is a deficient number, since it is larger than the sum of its proper divisors (102365623).

900501641 is a wasteful number, since it uses less digits than its factorization.

900501641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19640.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 900501641 is about 30008.3595186408. The cubic root of 900501641 is about 965.6687324217.

The spelling of 900501641 in words is "nine hundred million, five hundred one thousand, six hundred forty-one".