2506860389 has 4 divisors (see below), whose sum is σ = 2734756800. Its totient is φ = 2278963980.

The previous prime is 2506860329. The next prime is 2506860439. The reversal of 2506860389 is 9830686052.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2506860389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2506860329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113948189 + ... + 113948210.

It is an arithmetic number, because the mean of its divisors is an integer number (683689200).

Almost surely, 2^2506860389 is an apocalyptic number.

It is an amenable number.

2506860389 is a deficient number, since it is larger than the sum of its proper divisors (227896411).

2506860389 is a wasteful number, since it uses less digits than its factorization.

2506860389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227896410.

The product of its (nonzero) digits is 622080, while the sum is 47.

The square root of 2506860389 is about 50068.5568895290. The cubic root of 2506860389 is about 1358.4491384859.

The spelling of 2506860389 in words is "two billion, five hundred six million, eight hundred sixty thousand, three hundred eighty-nine".