61103018 has 8 divisors (see below), whose sum is σ = 91944612. Its totient is φ = 30454816.

The previous prime is 61103017. The next prime is 61103027. The reversal of 61103018 is 81030116.

It can be written as a sum of positive squares in 2 ways, for example, as 60109009 + 994009 = 7753^2 + 997^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61103017) 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, 47555 + ... + 48822.

Almost surely, 2^61103018 is an apocalyptic number.

61103018 is a deficient number, since it is larger than the sum of its proper divisors (30841594).

61103018 is a wasteful number, since it uses less digits than its factorization.

61103018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96696.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 61103018 is about 7816.8419454406. The cubic root of 61103018 is about 393.8711948084.

The spelling of 61103018 in words is "sixty-one million, one hundred three thousand, eighteen".