3138449780 has 24 divisors (see below), whose sum is σ = 6603368352. Its totient is φ = 1252975392.

The previous prime is 3138449777. The next prime is 3138449791. The reversal of 3138449780 is 879448313.

3138449780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139562 + ... + 160481.

It is an arithmetic number, because the mean of its divisors is an integer number (275140348).

Almost surely, 2^3138449780 is an apocalyptic number.

It is an amenable number.

3138449780 is an abundant number, since it is smaller than the sum of its proper divisors (3464918572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3138449780 is a wasteful number, since it uses less digits than its factorization.

3138449780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300575 (or 300573 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 3138449780 is about 56021.8687656883. The cubic root of 3138449780 is about 1464.1033282550.

The spelling of 3138449780 in words is "three billion, one hundred thirty-eight million, four hundred forty-nine thousand, seven hundred eighty".