2190526397 has 8 divisors (see below), whose sum is σ = 2385328800. Its totient is φ = 2003675184.

The previous prime is 2190526379. The next prime is 2190526399. The reversal of 2190526397 is 7936250912.

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

It is a cyclic number.

It is not a de Polignac number, because 2190526397 - 2²⁴ = 2173749181 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 (2190526399) 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, 1987223 + ... + 1988324.

It is an arithmetic number, because the mean of its divisors is an integer number (298166100).

Almost surely, 2^2190526397 is an apocalyptic number.

It is an amenable number.

2190526397 is a deficient number, since it is larger than the sum of its proper divisors (194802403).

2190526397 is a wasteful number, since it uses less digits than its factorization.

2190526397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3975595.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 2190526397 is about 46803.0596969899. The cubic root of 2190526397 is about 1298.7218990679.

The spelling of 2190526397 in words is "two billion, one hundred ninety million, five hundred twenty-six thousand, three hundred ninety-seven".