368490109 has 4 divisors (see below), whose sum is σ = 396835516. Its totient is φ = 340144704.

The previous prime is 368490103. The next prime is 368490121. The reversal of 368490109 is 901094863.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 901094863 = 2579 ⋅349397.

It can be written as a sum of positive squares in 2 ways, for example, as 79388100 + 289102009 = 8910^2 + 17003^2 .

It is a cyclic number.

It is not a de Polignac number, because 368490109 - 2⁵ = 368490077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (368490103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14172684 + ... + 14172709.

It is an arithmetic number, because the mean of its divisors is an integer number (99208879).

Almost surely, 2^368490109 is an apocalyptic number.

It is an amenable number.

368490109 is a deficient number, since it is larger than the sum of its proper divisors (28345407).

368490109 is a wasteful number, since it uses less digits than its factorization.

368490109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28345406.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 368490109 is about 19196.0961916740. The cubic root of 368490109 is about 716.9275642377.

The spelling of 368490109 in words is "three hundred sixty-eight million, four hundred ninety thousand, one hundred nine".