2513491478 has 4 divisors (see below), whose sum is σ = 3770237220. Its totient is φ = 1256745738.

The previous prime is 2513491469. The next prime is 2513491507. The reversal of 2513491478 is 8741943152.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 628372868 + ... + 628372871.

It is an arithmetic number, because the mean of its divisors is an integer number (942559305).

Almost surely, 2^2513491478 is an apocalyptic number.

2513491478 is a deficient number, since it is larger than the sum of its proper divisors (1256745742).

2513491478 is a wasteful number, since it uses less digits than its factorization.

2513491478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256745741.

The product of its digits is 241920, while the sum is 44.

The square root of 2513491478 is about 50134.7332495148. The cubic root of 2513491478 is about 1359.6458633146.

The spelling of 2513491478 in words is "two billion, five hundred thirteen million, four hundred ninety-one thousand, four hundred seventy-eight".