2543694402 has 32 divisors (see below), whose sum is σ = 5191879680. Its totient is φ = 830535680.

The previous prime is 2543694383. The next prime is 2543694403. The reversal of 2543694402 is 2044963452.

2543694402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2543694402² = 12940762421532275208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2543694403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197599 + ... + 210077.

It is an arithmetic number, because the mean of its divisors is an integer number (162246240).

Almost surely, 2^2543694402 is an apocalyptic number.

2543694402 is an abundant number, since it is smaller than the sum of its proper divisors (2648185278).

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

2543694402 is a wasteful number, since it uses less digits than its factorization.

2543694402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13178.

The product of its (nonzero) digits is 207360, while the sum is 39.

The square root of 2543694402 is about 50435.0513234596. The cubic root of 2543694402 is about 1365.0701752488.

The spelling of 2543694402 in words is "two billion, five hundred forty-three million, six hundred ninety-four thousand, four hundred two".