4949815428 has 18 divisors (see below), whose sum is σ = 12512033534. Its totient is φ = 1649938464.

The previous prime is 4949815417. The next prime is 4949815463. The reversal of 4949815428 is 8245189494.

It is a happy number.

4949815428 is a `hidden beast` number, since 4 + 9 + 4 + 98 + 1 + 542 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3684732804 + 1265082624 = 60702^2 + 35568^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68747401 + ... + 68747472.

Almost surely, 2^4949815428 is an apocalyptic number.

It is an amenable number.

4949815428 is an abundant number, since it is smaller than the sum of its proper divisors (7562218106).

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

4949815428 is a wasteful number, since it uses less digits than its factorization.

4949815428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137494883 (or 137494878 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The square root of 4949815428 is about 70354.9246890365. The cubic root of 4949815428 is about 1704.2357382313.

The spelling of 4949815428 in words is "four billion, nine hundred forty-nine million, eight hundred fifteen thousand, four hundred twenty-eight".