2397192661 has 16 divisors (see below), whose sum is σ = 2573953200. Its totient is φ = 2224549888.

The previous prime is 2397192659. The next prime is 2397192671. The reversal of 2397192661 is 1662917932.

It is a happy number.

2397192661 is a nontrivial binomial coefficient, being equal to C(69242, 2).

It can be written as a sum of positive squares in 8 ways, for example, as 334670436 + 2062522225 = 18294^2 + 45415^2 .

It is a cyclic number.

It is not a de Polignac number, because 2397192661 - 2¹ = 2397192659 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 (2397192671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 586521 + ... + 590593.

It is an arithmetic number, because the mean of its divisors is an integer number (160872075).

Almost surely, 2^2397192661 is an apocalyptic number.

2397192661 is the 69241-st triangular number and also the 34621-st hexagonal number.

2397192661 is the 23081-st centered nonagonal number.

It is an amenable number.

2397192661 is a deficient number, since it is larger than the sum of its proper divisors (176760539).

2397192661 is a wasteful number, since it uses less digits than its factorization.

2397192661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4568.

The product of its digits is 244944, while the sum is 46.

The square root of 2397192661 is about 48961.1341882518. The cubic root of 2397192661 is about 1338.3436617006.

The spelling of 2397192661 in words is "two billion, three hundred ninety-seven million, one hundred ninety-two thousand, six hundred sixty-one".