1018150440 has 32 divisors (see below), whose sum is σ = 3054451680. Its totient is φ = 271506752.

The previous prime is 1018150439. The next prime is 1018150447. The reversal of 1018150440 is 440518101.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1018150440.

It is not an unprimeable number, because it can be changed into a prime (1018150447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4242174 + ... + 4242413.

It is an arithmetic number, because the mean of its divisors is an integer number (95451615).

Almost surely, 2^1018150440 is an apocalyptic number.

1018150440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1018150440 is an abundant number, since it is smaller than the sum of its proper divisors (2036301240).

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

1018150440 is a wasteful number, since it uses less digits than its factorization.

1018150440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8484601 (or 8484597 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 1018150440 is about 31908.4697220033. The cubic root of 1018150440 is about 1006.0139070864.

Adding to 1018150440 its reverse (440518101), we get a palindrome (1458668541).

The spelling of 1018150440 in words is "one billion, eighteen million, one hundred fifty thousand, four hundred forty".