2539782651 has 24 divisors (see below), whose sum is σ = 3953239104. Its totient is φ = 1446152400.

The previous prime is 2539782607. The next prime is 2539782683. The reversal of 2539782651 is 1562879352.

2539782651 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2539782651 - 2⁷ = 2539782523 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2539782651.

It is not an unprimeable number, because it can be changed into a prime (2539782151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11076 + ... + 72126.

It is an arithmetic number, because the mean of its divisors is an integer number (164718296).

Almost surely, 2^2539782651 is an apocalyptic number.

2539782651 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2539782651 is a deficient number, since it is larger than the sum of its proper divisors (1413456453).

2539782651 is a wasteful number, since it uses less digits than its factorization.

2539782651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61351 (or 61344 counting only the distinct ones).

The product of its digits is 907200, while the sum is 48.

The square root of 2539782651 is about 50396.2563192942. The cubic root of 2539782651 is about 1364.3700709452.

The spelling of 2539782651 in words is "two billion, five hundred thirty-nine million, seven hundred eighty-two thousand, six hundred fifty-one".