2594009691 has 48 divisors (see below), whose sum is σ = 4782412544. Its totient is φ = 1368257184.

The previous prime is 2594009681. The next prime is 2594009699. The reversal of 2594009691 is 1969004952.

It is not a de Polignac number, because 2594009691 - 2¹⁰ = 2594008667 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2594009699) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36541 + ... + 80766.

Almost surely, 2^2594009691 is an apocalyptic number.

2594009691 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2594009691 is a deficient number, since it is larger than the sum of its proper divisors (2188402853).

2594009691 is a wasteful number, since it uses less digits than its factorization.

2594009691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117342 (or 117330 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 2594009691 is about 50931.4214508097. The cubic root of 2594009691 is about 1374.0120181630.

The spelling of 2594009691 in words is "two billion, five hundred ninety-four million, nine thousand, six hundred ninety-one".