2539694898 has 160 divisors (see below), whose sum is σ = 6386244480. Its totient is φ = 749295360.

The previous prime is 2539694897. The next prime is 2539694909. The reversal of 2539694898 is 8984969352.

2539694898 is a `hidden beast` number, since 2 + 539 + 6 + 9 + 4 + 8 + 98 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2539694897) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 5784963 + ... + 5785401.

It is an arithmetic number, because the mean of its divisors is an integer number (39914028).

Almost surely, 2^2539694898 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2539694898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3193122240).

2539694898 is an abundant number, since it is smaller than the sum of its proper divisors (3846549582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2539694898 is a wasteful number, since it uses less digits than its factorization.

2539694898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574 (or 565 counting only the distinct ones).

The product of its digits is 33592320, while the sum is 63.

The square root of 2539694898 is about 50395.3856816276. The cubic root of 2539694898 is about 1364.3543571405.

The spelling of 2539694898 in words is "two billion, five hundred thirty-nine million, six hundred ninety-four thousand, eight hundred ninety-eight".