3138442780 has 24 divisors (see below), whose sum is σ = 7189887600. Its totient is φ = 1141251840.

The previous prime is 3138442771. The next prime is 3138442789. The reversal of 3138442780 is 872448313.

It is an interprime number because it is at equal distance from previous prime (3138442771) and next prime (3138442789).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3138442789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7132605 + ... + 7133044.

It is an arithmetic number, because the mean of its divisors is an integer number (299578650).

Almost surely, 2^3138442780 is an apocalyptic number.

It is an amenable number.

3138442780 is an abundant number, since it is smaller than the sum of its proper divisors (4051444820).

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

3138442780 is a wasteful number, since it uses less digits than its factorization.

3138442780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14265669 (or 14265667 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 3138442780 is about 56021.8062900510. The cubic root of 3138442780 is about 1464.1022397419.

The spelling of 3138442780 in words is "three billion, one hundred thirty-eight million, four hundred forty-two thousand, seven hundred eighty".