2497943986 has 4 divisors (see below), whose sum is σ = 3746915982. Its totient is φ = 1248971992.

The previous prime is 2497943941. The next prime is 2497944017. The reversal of 2497943986 is 6893497942.

2497943986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6893497942 = 2 ⋅3446748971.

It can be written as a sum of positive squares in only one way, i.e., 1797336025 + 700607961 = 42395^2 + 26469^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624485995 + ... + 624485998.

Almost surely, 2^2497943986 is an apocalyptic number.

2497943986 is a deficient number, since it is larger than the sum of its proper divisors (1248971996).

2497943986 is a wasteful number, since it uses less digits than its factorization.

2497943986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248971995.

The product of its digits is 23514624, while the sum is 61.

The square root of 2497943986 is about 49979.4356310673. The cubic root of 2497943986 is about 1356.8366475483.

The spelling of 2497943986 in words is "two billion, four hundred ninety-seven million, nine hundred forty-three thousand, nine hundred eighty-six".