1089108920902 has 4 divisors (see below), whose sum is σ = 1633663381356. Its totient is φ = 544554460450.

The previous prime is 1089108920833. The next prime is 1089108920903. The reversal of 1089108920902 is 2090298019801.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089108920903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272277230224 + ... + 272277230227.

It is an arithmetic number, because the mean of its divisors is an integer number (408415845339).

Almost surely, 2^{1089108920902} is an apocalyptic number.

1089108920902 is a deficient number, since it is larger than the sum of its proper divisors (544554460454).

1089108920902 is an equidigital number, since it uses as much as digits as its factorization.

1089108920902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544554460453.

The product of its (nonzero) digits is 186624, while the sum is 49.

The spelling of 1089108920902 in words is "one trillion, eighty-nine billion, one hundred eight million, nine hundred twenty thousand, nine hundred two".