499180640 has 72 divisors (see below), whose sum is σ = 1371876912. Its totient is φ = 171144960.

The previous prime is 499180637. The next prime is 499180681. The reversal of 499180640 is 46081994.

It is a super-2 number, since 2×499180640² = 498362622701619200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23996 + ... + 39675.

It is an arithmetic number, because the mean of its divisors is an integer number (19053846).

Almost surely, 2^499180640 is an apocalyptic number.

499180640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

499180640 is an abundant number, since it is smaller than the sum of its proper divisors (872696272).

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

499180640 is a wasteful number, since it uses less digits than its factorization.

499180640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63700 (or 63685 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 499180640 is about 22342.3508163309. The cubic root of 499180640 is about 793.2667379701.

The spelling of 499180640 in words is "four hundred ninety-nine million, one hundred eighty thousand, six hundred forty".