2501738166 has 16 divisors (see below), whose sum is σ = 5035347504. Its totient is φ = 828600864.

The previous prime is 2501738159. The next prime is 2501738167. The reversal of 2501738166 is 6618371052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2501738167) 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, 1326945 + ... + 1328828.

It is an arithmetic number, because the mean of its divisors is an integer number (314709219).

Almost surely, 2^2501738166 is an apocalyptic number.

2501738166 is an abundant number, since it is smaller than the sum of its proper divisors (2533609338).

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

2501738166 is a wasteful number, since it uses less digits than its factorization.

2501738166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2655935.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 2501738166 is about 50017.3786398288. The cubic root of 2501738166 is about 1357.5232759898.

The spelling of 2501738166 in words is "two billion, five hundred one million, seven hundred thirty-eight thousand, one hundred sixty-six".