1864630956940 has 24 divisors (see below), whose sum is σ = 3934282956912. Its totient is φ = 742317535680.

The previous prime is 1864630956931. The next prime is 1864630956941. The reversal of 1864630956940 is 496590364681.

It is not an unprimeable number, because it can be changed into a prime (1864630956941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220923619 + ... + 220932058.

It is an arithmetic number, because the mean of its divisors is an integer number (163928456538).

Almost surely, 2^{1864630956940} is an apocalyptic number.

1864630956940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1864630956940 is an abundant number, since it is smaller than the sum of its proper divisors (2069651999972).

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

1864630956940 is a wasteful number, since it uses less digits than its factorization.

1864630956940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441855897 (or 441855895 counting only the distinct ones).

The product of its (nonzero) digits is 33592320, while the sum is 61.

The spelling of 1864630956940 in words is "one trillion, eight hundred sixty-four billion, six hundred thirty million, nine hundred fifty-six thousand, nine hundred forty".