2457091640 has 32 divisors (see below), whose sum is σ = 5583202560. Its totient is φ = 973104000.

The previous prime is 2457091537. The next prime is 2457091643. The reversal of 2457091640 is 461907542.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2457091594 and 2457091603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2457091643) 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, 300056 + ... + 308135.

It is an arithmetic number, because the mean of its divisors is an integer number (174475080).

Almost surely, 2^2457091640 is an apocalyptic number.

2457091640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2457091640 is an abundant number, since it is smaller than the sum of its proper divisors (3126110920).

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

2457091640 is a wasteful number, since it uses less digits than its factorization.

2457091640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608303 (or 608299 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 2457091640 is about 49569.0593011407. The cubic root of 2457091640 is about 1349.3992095789.

The spelling of 2457091640 in words is "two billion, four hundred fifty-seven million, ninety-one thousand, six hundred forty".