1089208020902 has 16 divisors (see below), whose sum is σ = 1737014271840. Its totient is φ = 511096789632.

The previous prime is 1089208020889. The next prime is 1089208020907. The reversal of 1089208020902 is 2090208029801.

It is a super-2 number, since 2×1089208020902² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1089208020902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089208020907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223379027 + ... + 223383902.

It is an arithmetic number, because the mean of its divisors is an integer number (108563391990).

Almost surely, 2^{1089208020902} is an apocalyptic number.

1089208020902 is a deficient number, since it is larger than the sum of its proper divisors (647806250938).

1089208020902 is a wasteful number, since it uses less digits than its factorization.

1089208020902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446763007.

The product of its (nonzero) digits is 41472, while the sum is 41.

The spelling of 1089208020902 in words is "one trillion, eighty-nine billion, two hundred eight million, twenty thousand, nine hundred two".