1018918950 has 96 divisors (see below), whose sum is σ = 2966072064. Its totient is φ = 226592640.

The previous prime is 1018918939. The next prime is 1018918963. The reversal of 1018918950 is 598198101.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 25737 + ... + 51963.

It is an arithmetic number, because the mean of its divisors is an integer number (30896584).

Almost surely, 2^1018918950 is an apocalyptic number.

1018918950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1018918950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1483036032).

1018918950 is an abundant number, since it is smaller than the sum of its proper divisors (1947153114).

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

1018918950 is a wasteful number, since it uses less digits than its factorization.

1018918950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26286 (or 26281 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 42.

The square root of 1018918950 is about 31920.5098643490. The cubic root of 1018918950 is about 1006.2669598366.

The spelling of 1018918950 in words is "one billion, eighteen million, nine hundred eighteen thousand, nine hundred fifty".