2049811478 has 24 divisors (see below), whose sum is σ = 3632109336. Its totient is φ = 860059200.

The previous prime is 2049811367. The next prime is 2049811483. The reversal of 2049811478 is 8741189402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 271943 + ... + 279378.

It is an arithmetic number, because the mean of its divisors is an integer number (151337889).

Almost surely, 2^2049811478 is an apocalyptic number.

2049811478 is a deficient number, since it is larger than the sum of its proper divisors (1582297858).

2049811478 is a wasteful number, since it uses less digits than its factorization.

2049811478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551360 (or 551347 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 2049811478 is about 45274.8437656056. The cubic root of 2049811478 is about 1270.2951507781.

The spelling of 2049811478 in words is "two billion, forty-nine million, eight hundred eleven thousand, four hundred seventy-eight".