1125602638 has 4 divisors (see below), whose sum is σ = 1688403960. Its totient is φ = 562801318.

The previous prime is 1125602633. The next prime is 1125602659. The reversal of 1125602638 is 8362065211.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125602633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 281400658 + ... + 281400661.

It is an arithmetic number, because the mean of its divisors is an integer number (422100990).

Almost surely, 2^1125602638 is an apocalyptic number.

1125602638 is a deficient number, since it is larger than the sum of its proper divisors (562801322).

1125602638 is an equidigital number, since it uses as much as digits as its factorization.

1125602638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562801321.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 1125602638 is about 33550.0020566318. The cubic root of 1125602638 is about 1040.2275876431.

Adding to 1125602638 its reverse (8362065211), we get a palindrome (9487667849).

The spelling of 1125602638 in words is "one billion, one hundred twenty-five million, six hundred two thousand, six hundred thirty-eight".