1125609838 has 4 divisors (see below), whose sum is σ = 1688414760. Its totient is φ = 562804918.

The previous prime is 1125609829. The next prime is 1125609887. The reversal of 1125609838 is 8389065211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8389065211 = 773 ⋅10852607.

It is a junction number, because it is equal to n+sod(n) for n = 1125609794 and 1125609803.

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, 281402458 + ... + 281402461.

It is an arithmetic number, because the mean of its divisors is an integer number (422103690).

Almost surely, 2^1125609838 is an apocalyptic number.

1125609838 is a deficient number, since it is larger than the sum of its proper divisors (562804922).

1125609838 is an equidigital number, since it uses as much as digits as its factorization.

1125609838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562804921.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 1125609838 is about 33550.1093589872. The cubic root of 1125609838 is about 1040.2298056024.

The spelling of 1125609838 in words is "one billion, one hundred twenty-five million, six hundred nine thousand, eight hundred thirty-eight".