109902190 has 8 divisors (see below), whose sum is σ = 197823960. Its totient is φ = 43960872.

The previous prime is 109902167. The next prime is 109902217. The reversal of 109902190 is 91209901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×109902190² = 24156982733592200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5495100 + ... + 5495119.

It is an arithmetic number, because the mean of its divisors is an integer number (24727995).

Almost surely, 2^109902190 is an apocalyptic number.

109902190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

109902190 is a deficient number, since it is larger than the sum of its proper divisors (87921770).

109902190 is a wasteful number, since it uses less digits than its factorization.

109902190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10990226.

The product of its (nonzero) digits is 1458, while the sum is 31.

The square root of 109902190 is about 10483.4245359043. The cubic root of 109902190 is about 478.9999288125. Note that the first 4 decimals are identical.

The spelling of 109902190 in words is "one hundred nine million, nine hundred two thousand, one hundred ninety".