1011125648 has 30 divisors (see below), whose sum is σ = 2121350274. Its totient is φ = 466672128.

The previous prime is 1011125611. The next prime is 1011125651. The reversal of 1011125648 is 8465211101.

It can be written as a sum of positive squares in 3 ways, for example, as 394384 + 1010731264 = 628^2 + 31792^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1011125648.

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, 184265 + ... + 189672.

Almost surely, 2^1011125648 is an apocalyptic number.

It is an amenable number.

1011125648 is an abundant number, since it is smaller than the sum of its proper divisors (1110224626).

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

1011125648 is a wasteful number, since it uses less digits than its factorization.

1011125648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373971 (or 373952 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 1011125648 is about 31798.2019617462. The cubic root of 1011125648 is about 1003.6948803780.

Adding to 1011125648 its reverse (8465211101), we get a palindrome (9476336749).

The spelling of 1011125648 in words is "one billion, eleven million, one hundred twenty-five thousand, six hundred forty-eight".