1630064240 has 40 divisors (see below), whose sum is σ = 4331315040. Its totient is φ = 558878976.

The previous prime is 1630064209. The next prime is 1630064243. The reversal of 1630064240 is 424600361.

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 (1630064243) 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 7 ways as a sum of consecutive naturals, for example, 1454855 + ... + 1455974.

It is an arithmetic number, because the mean of its divisors is an integer number (108282876).

Almost surely, 2^1630064240 is an apocalyptic number.

1630064240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1630064240 is an abundant number, since it is smaller than the sum of its proper divisors (2701250800).

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

1630064240 is a wasteful number, since it uses less digits than its factorization.

1630064240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2910849 (or 2910843 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 1630064240 is about 40374.0540446460. The cubic root of 1630064240 is about 1176.8873822797.

The spelling of 1630064240 in words is "one billion, six hundred thirty million, sixty-four thousand, two hundred forty".