2140297673 has 2 divisors, whose sum is σ = 2140297674. Its totient is φ = 2140297672.

The previous prime is 2140297661. The next prime is 2140297711. The reversal of 2140297673 is 3767920412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1722831049 + 417466624 = 41507^2 + 20432^2 .

It is a cyclic number.

It is not a de Polignac number, because 2140297673 - 2¹² = 2140293577 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2140297673.

It is not a weakly prime, because it can be changed into another prime (2140297613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070148836 + 1070148837.

It is an arithmetic number, because the mean of its divisors is an integer number (1070148837).

Almost surely, 2^2140297673 is an apocalyptic number.

It is an amenable number.

2140297673 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140297673 is an equidigital number, since it uses as much as digits as its factorization.

2140297673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 2140297673 is about 46263.3512945182. The cubic root of 2140297673 is about 1288.7184903815.

The spelling of 2140297673 in words is "two billion, one hundred forty million, two hundred ninety-seven thousand, six hundred seventy-three".