1001656650 has 96 divisors (see below), whose sum is σ = 2558336256. Its totient is φ = 259200000.

The previous prime is 1001656627. The next prime is 1001656673. The reversal of 1001656650 is 566561001.

It is an interprime number because it is at equal distance from previous prime (1001656627) and next prime (1001656673).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1666350 + ... + 1666950.

It is an arithmetic number, because the mean of its divisors is an integer number (26649336).

Almost surely, 2^1001656650 is an apocalyptic number.

1001656650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1001656650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1279168128).

1001656650 is an abundant number, since it is smaller than the sum of its proper divisors (1556679606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1001656650 is a wasteful number, since it uses less digits than its factorization.

1001656650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928 (or 923 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 1001656650 is about 31648.9596985430. The cubic root of 1001656650 is about 1000.5519120038.

It can be divided in two parts, 10016 and 56650, that added together give a palindrome (66666).

The spelling of 1001656650 in words is "one billion, one million, six hundred fifty-six thousand, six hundred fifty".