1125477918 has 12 divisors (see below), whose sum is σ = 2438535528. Its totient is φ = 375159300.

The previous prime is 1125477917. The next prime is 1125477919. The reversal of 1125477918 is 8197745211.

It is a happy number.

1125477918 is a `hidden beast` number, since 1 + 12 + 547 + 7 + 91 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (1125477917) and next prime (1125477919).

It is a super-2 number, since 2×1125477918² = 2533401087811229448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125477917) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31263258 + ... + 31263293.

It is an arithmetic number, because the mean of its divisors is an integer number (203211294).

Almost surely, 2^1125477918 is an apocalyptic number.

1125477918 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1125477918 is an abundant number, since it is smaller than the sum of its proper divisors (1313057610).

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

1125477918 is a wasteful number, since it uses less digits than its factorization.

1125477918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62526559 (or 62526556 counting only the distinct ones).

The product of its digits is 141120, while the sum is 45.

The square root of 1125477918 is about 33548.1432869242. The cubic root of 1125477918 is about 1040.1891661574.

The spelling of 1125477918 in words is "one billion, one hundred twenty-five million, four hundred seventy-seven thousand, nine hundred eighteen".