499778160 has 80 divisors (see below), whose sum is σ = 1770648576. Its totient is φ = 114234624.

The previous prime is 499778131. The next prime is 499778161. The reversal of 499778160 is 61877994.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499778161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147064 + ... + 150423.

Almost surely, 2^499778160 is an apocalyptic number.

499778160 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

499778160 is an abundant number, since it is smaller than the sum of its proper divisors (1270870416).

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

499778160 is a wasteful number, since it uses less digits than its factorization.

499778160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297510 (or 297504 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 51.

The square root of 499778160 is about 22355.7187314566. The cubic root of 499778160 is about 793.5831256032.

The spelling of 499778160 in words is "four hundred ninety-nine million, seven hundred seventy-eight thousand, one hundred sixty".