1018232040 has 128 divisors (see below), whose sum is σ = 3674880000. Its totient is φ = 220485888.

The previous prime is 1018232029. The next prime is 1018232041. The reversal of 1018232040 is 402328101.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1018231998 and 1018232016.

It is not an unprimeable number, because it can be changed into a prime (1018232041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15940 + ... + 47859.

It is an arithmetic number, because the mean of its divisors is an integer number (28710000).

Almost surely, 2^1018232040 is an apocalyptic number.

1018232040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1018232040 is an abundant number, since it is smaller than the sum of its proper divisors (2656647960).

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

1018232040 is a wasteful number, since it uses less digits than its factorization.

1018232040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63839 (or 63835 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1018232040 is about 31909.7483537555. The cubic root of 1018232040 is about 1006.0407821396.

The spelling of 1018232040 in words is "one billion, eighteen million, two hundred thirty-two thousand, forty".