2030646640 has 40 divisors (see below), whose sum is σ = 5150460528. Its totient is φ = 738416640.

The previous prime is 2030646637. The next prime is 2030646643. The reversal of 2030646640 is 466460302.

It is an interprime number because it is at equal distance from previous prime (2030646637) and next prime (2030646643).

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2030646643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1152897 + ... + 1154656.

Almost surely, 2^2030646640 is an apocalyptic number.

2030646640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2030646640 is an abundant number, since it is smaller than the sum of its proper divisors (3119813888).

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

2030646640 is a wasteful number, since it uses less digits than its factorization.

2030646640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2307577 (or 2307571 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 2030646640 is about 45062.6967679477. The cubic root of 2030646640 is about 1266.3238475148.

The spelling of 2030646640 in words is "two billion, thirty million, six hundred forty-six thousand, six hundred forty".