2238578548 has 6 divisors (see below), whose sum is σ = 3917512466. Its totient is φ = 1119289272.

The previous prime is 2238578521. The next prime is 2238578561. The reversal of 2238578548 is 8458758322.

It can be written as a sum of positive squares in only one way, i.e., 2225197584 + 13380964 = 47172^2 + 3658^2 .

It is a super-2 number, since 2×2238578548² = 10022467831131576608, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2238578495 and 2238578504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 279822315 + ... + 279822322.

Almost surely, 2^2238578548 is an apocalyptic number.

It is an amenable number.

2238578548 is a deficient number, since it is larger than the sum of its proper divisors (1678933918).

2238578548 is a wasteful number, since it uses less digits than its factorization.

2238578548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559644641 (or 559644639 counting only the distinct ones).

The product of its digits is 4300800, while the sum is 52.

The square root of 2238578548 is about 47313.6190541370. The cubic root of 2238578548 is about 1308.1496998124.

The spelling of 2238578548 in words is "two billion, two hundred thirty-eight million, five hundred seventy-eight thousand, five hundred forty-eight".