2454931840 has 32 divisors (see below), whose sum is σ = 5868822960. Its totient is φ = 981972480.

The previous prime is 2454931823. The next prime is 2454931847. The reversal of 2454931840 is 481394542.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 2454931793 and 2454931802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2454931847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1917276 + ... + 1918555.

Almost surely, 2^2454931840 is an apocalyptic number.

2454931840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2454931840 is an abundant number, since it is smaller than the sum of its proper divisors (3413891120).

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

2454931840 is an equidigital number, since it uses as much as digits as its factorization.

2454931840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3835850 (or 3835838 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 2454931840 is about 49547.2687440993. The cubic root of 2454931840 is about 1349.0037166965.

The spelling of 2454931840 in words is "two billion, four hundred fifty-four million, nine hundred thirty-one thousand, eight hundred forty".