2457148491 has 24 divisors (see below), whose sum is σ = 4155182304. Its totient is φ = 1369837440.

The previous prime is 2457148481. The next prime is 2457148531. The reversal of 2457148491 is 1948417542.

It is not a de Polignac number, because 2457148491 - 2¹³ = 2457140299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2457148451) 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, 473056 + ... + 478221.

It is an arithmetic number, because the mean of its divisors is an integer number (173132596).

Almost surely, 2^2457148491 is an apocalyptic number.

2457148491 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2457148491 is a deficient number, since it is larger than the sum of its proper divisors (1698033813).

2457148491 is a wasteful number, since it uses less digits than its factorization.

2457148491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951331 (or 951328 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 2457148491 is about 49569.6327503039. The cubic root of 2457148491 is about 1349.4096167478.

The spelling of 2457148491 in words is "two billion, four hundred fifty-seven million, one hundred forty-eight thousand, four hundred ninety-one".