2507994109 has 2 divisors, whose sum is σ = 2507994110. Its totient is φ = 2507994108.

The previous prime is 2507994043. The next prime is 2507994127. The reversal of 2507994109 is 9014997052.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1827306009 + 680688100 = 42747^2 + 26090^2 .

It is a cyclic number.

It is not a de Polignac number, because 2507994109 - 2¹¹ = 2507992061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2507994179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1253997054 + 1253997055.

It is an arithmetic number, because the mean of its divisors is an integer number (1253997055).

Almost surely, 2^2507994109 is an apocalyptic number.

It is an amenable number.

2507994109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2507994109 is an equidigital number, since it uses as much as digits as its factorization.

2507994109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 46.

The square root of 2507994109 is about 50079.8772861915. The cubic root of 2507994109 is about 1358.6538924554.

The spelling of 2507994109 in words is "two billion, five hundred seven million, nine hundred ninety-four thousand, one hundred nine".