4891390148 has 6 divisors (see below), whose sum is σ = 8559932766. Its totient is φ = 2445695072.

The previous prime is 4891390117. The next prime is 4891390171. The reversal of 4891390148 is 8410931984.

It can be written as a sum of positive squares in only one way, i.e., 4667349124 + 224041024 = 68318^2 + 14968^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611423765 + ... + 611423772.

It is an arithmetic number, because the mean of its divisors is an integer number (1426655461).

Almost surely, 2^4891390148 is an apocalyptic number.

It is an amenable number.

4891390148 is a deficient number, since it is larger than the sum of its proper divisors (3668542618).

4891390148 is a wasteful number, since it uses less digits than its factorization.

4891390148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222847541 (or 1222847539 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 47.

The square root of 4891390148 is about 69938.4740182398. The cubic root of 4891390148 is about 1697.5038508274.

The spelling of 4891390148 in words is "four billion, eight hundred ninety-one million, three hundred ninety thousand, one hundred forty-eight".