2457978243 has 16 divisors (see below), whose sum is σ = 3750462720. Its totient is φ = 1402694496.

The previous prime is 2457978227. The next prime is 2457978247. The reversal of 2457978243 is 3428797542.

It is not a de Polignac number, because 2457978243 - 2⁴ = 2457978227 is a prime.

It is a super-2 number, since 2×2457978243² = 12083314086122734098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2457978247) 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, 61413 + ... + 93206.

It is an arithmetic number, because the mean of its divisors is an integer number (234403920).

Almost surely, 2^2457978243 is an apocalyptic number.

2457978243 is a deficient number, since it is larger than the sum of its proper divisors (1292484477).

2457978243 is a wasteful number, since it uses less digits than its factorization.

2457978243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155386.

The product of its digits is 3386880, while the sum is 51.

The square root of 2457978243 is about 49578.0016035338. The cubic root of 2457978243 is about 1349.5614932450.

It can be divided in two parts, 2457 and 978243, that added together give a triangular number (980700 = T₁₄₀₀).

The spelling of 2457978243 in words is "two billion, four hundred fifty-seven million, nine hundred seventy-eight thousand, two hundred forty-three".