1001649016 has 8 divisors (see below), whose sum is σ = 1878091920. Its totient is φ = 500824504.

The previous prime is 1001649001. The next prime is 1001649023. The reversal of 1001649016 is 6109461001.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62603056 + ... + 62603071.

It is an arithmetic number, because the mean of its divisors is an integer number (234761490).

Almost surely, 2^1001649016 is an apocalyptic number.

It is an amenable number.

1001649016 is a deficient number, since it is larger than the sum of its proper divisors (876442904).

1001649016 is a wasteful number, since it uses less digits than its factorization.

1001649016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125206133 (or 125206129 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1001649016 is about 31648.8390940331. The cubic root of 1001649016 is about 1000.5493701372.

The spelling of 1001649016 in words is "one billion, one million, six hundred forty-nine thousand, sixteen".