1103128730418 has 32 divisors (see below), whose sum is σ = 2591966809152. Its totient is φ = 308567476800.

The previous prime is 1103128730369. The next prime is 1103128730447. The reversal of 1103128730418 is 8140378213011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 642848053 + ... + 642849768.

It is an arithmetic number, because the mean of its divisors is an integer number (80998962786).

Almost surely, 2^{1103128730418} is an apocalyptic number.

1103128730418 is an abundant number, since it is smaller than the sum of its proper divisors (1488838078734).

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

1103128730418 is a wasteful number, since it uses less digits than its factorization.

1103128730418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285697850.

The product of its (nonzero) digits is 32256, while the sum is 39.

The spelling of 1103128730418 in words is "one trillion, one hundred three billion, one hundred twenty-eight million, seven hundred thirty thousand, four hundred eighteen".