1118731801187 has 64 divisors (see below), whose sum is σ = 1606180036608. Its totient is φ = 749848320000.

The previous prime is 1118731801183. The next prime is 1118731801349. The reversal of 1118731801187 is 7811081378111.

It is not a de Polignac number, because 1118731801187 - 2² = 1118731801183 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1118731801181) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1393262 + ... + 2044172.

It is an arithmetic number, because the mean of its divisors is an integer number (25096563072).

Almost surely, 2^{1118731801187} is an apocalyptic number.

1118731801187 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1118731801187 is a deficient number, since it is larger than the sum of its proper divisors (487448235421).

1118731801187 is a wasteful number, since it uses less digits than its factorization.

1118731801187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651060.

The product of its (nonzero) digits is 75264, while the sum is 47.

The spelling of 1118731801187 in words is "one trillion, one hundred eighteen billion, seven hundred thirty-one million, eight hundred one thousand, one hundred eighty-seven".