2097494639 has 2 divisors, whose sum is σ = 2097494640. Its totient is φ = 2097494638.

The previous prime is 2097494621. The next prime is 2097494647. The reversal of 2097494639 is 9364947902.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2097494639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2097490639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1048747319 + 1048747320.

It is an arithmetic number, because the mean of its divisors is an integer number (1048747320).

Almost surely, 2^2097494639 is an apocalyptic number.

2097494639 is a deficient number, since it is larger than the sum of its proper divisors (1).

2097494639 is an equidigital number, since it uses as much as digits as its factorization.

2097494639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2939328, while the sum is 53.

The square root of 2097494639 is about 45798.4130620265. The cubic root of 2097494639 is about 1280.0697062869.

The spelling of 2097494639 in words is "two billion, ninety-seven million, four hundred ninety-four thousand, six hundred thirty-nine".