1011861418 has 8 divisors (see below), whose sum is σ = 1517953860. Its totient is φ = 505876800.

The previous prime is 1011861413. The next prime is 1011861479. The reversal of 1011861418 is 8141681101.

It can be written as a sum of positive squares in 2 ways, for example, as 933485809 + 78375609 = 30553^2 + 8853^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×1011861418³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1011861418.

It is not an unprimeable number, because it can be changed into a prime (1011861413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3298 + ... + 45106.

Almost surely, 2^1011861418 is an apocalyptic number.

1011861418 is a deficient number, since it is larger than the sum of its proper divisors (506092442).

1011861418 is a wasteful number, since it uses less digits than its factorization.

1011861418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53912.

The product of its (nonzero) digits is 1536, while the sum is 31.

The square root of 1011861418 is about 31809.7692226775. The cubic root of 1011861418 is about 1003.9382756242.

The spelling of 1011861418 in words is "one billion, eleven million, eight hundred sixty-one thousand, four hundred eighteen".