1018861103 has 4 divisors (see below), whose sum is σ = 1097235048. Its totient is φ = 940487160.

The previous prime is 1018861099. The next prime is 1018861117. The reversal of 1018861103 is 3011688101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3011688101 = 6971 ⋅432031.

It is a cyclic number.

It is not a de Polignac number, because 1018861103 - 2² = 1018861099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1018861303) 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, 39186953 + ... + 39186978.

It is an arithmetic number, because the mean of its divisors is an integer number (274308762).

Almost surely, 2^1018861103 is an apocalyptic number.

1018861103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1018861103 is a deficient number, since it is larger than the sum of its proper divisors (78373945).

1018861103 is an equidigital number, since it uses as much as digits as its factorization.

1018861103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78373944.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 1018861103 is about 31919.6037412747. The cubic root of 1018861103 is about 1006.2479165730.

The spelling of 1018861103 in words is "one billion, eighteen million, eight hundred sixty-one thousand, one hundred three".