1089203215770 has 48 divisors (see below), whose sum is σ = 2832636044160. Its totient is φ = 290381608032.

The previous prime is 1089203215757. The next prime is 1089203215799. The reversal of 1089203215770 is 775123029801.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1149510 + ... + 1870769.

It is an arithmetic number, because the mean of its divisors is an integer number (59013250920).

Almost surely, 2^{1089203215770} is an apocalyptic number.

1089203215770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1089203215770 is an abundant number, since it is smaller than the sum of its proper divisors (1743432828390).

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

1089203215770 is a wasteful number, since it uses less digits than its factorization.

1089203215770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3024299 (or 3024296 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The spelling of 1089203215770 in words is "one trillion, eighty-nine billion, two hundred three million, two hundred fifteen thousand, seven hundred seventy".