2190359661 has 8 divisors (see below), whose sum is σ = 3337690944. Its totient is φ = 1251634080.

The previous prime is 2190359599. The next prime is 2190359663. The reversal of 2190359661 is 1669530912.

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

It is not a de Polignac number, because 2190359661 - 2⁶ = 2190359597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2190359663) 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, 52151400 + ... + 52151441.

It is an arithmetic number, because the mean of its divisors is an integer number (417211368).

Almost surely, 2^2190359661 is an apocalyptic number.

2190359661 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2190359661 is a deficient number, since it is larger than the sum of its proper divisors (1147331283).

2190359661 is a wasteful number, since it uses less digits than its factorization.

2190359661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104302851.

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 2190359661 is about 46801.2784120263. The cubic root of 2190359661 is about 1298.6889466857.

The spelling of 2190359661 in words is "two billion, one hundred ninety million, three hundred fifty-nine thousand, six hundred sixty-one".