2090641397 has 4 divisors (see below), whose sum is σ = 2251459980. Its totient is φ = 1929822816.

The previous prime is 2090641391. The next prime is 2090641403. The reversal of 2090641397 is 7931460902.

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

It is an interprime number because it is at equal distance from previous prime (2090641391) and next prime (2090641403).

It can be written as a sum of positive squares in 2 ways, for example, as 403567921 + 1687073476 = 20089^2 + 41074^2 .

It is a cyclic number.

It is not a de Polignac number, because 2090641397 - 2⁸ = 2090641141 is a prime.

It is a super-3 number, since 3×2090641397³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2090641391) 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, 80409272 + ... + 80409297.

It is an arithmetic number, because the mean of its divisors is an integer number (562864995).

Almost surely, 2^2090641397 is an apocalyptic number.

It is an amenable number.

2090641397 is a deficient number, since it is larger than the sum of its proper divisors (160818583).

2090641397 is a wasteful number, since it uses less digits than its factorization.

2090641397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160818582.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 2090641397 is about 45723.5322017011. The cubic root of 2090641397 is about 1278.6740413355.

The spelling of 2090641397 in words is "two billion, ninety million, six hundred forty-one thousand, three hundred ninety-seven".