1238130780 has 48 divisors (see below), whose sum is σ = 3493252224. Its totient is φ = 327645760.

The previous prime is 1238130743. The next prime is 1238130797. The reversal of 1238130780 is 870318321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70902 + ... + 86621.

It is an arithmetic number, because the mean of its divisors is an integer number (72776088).

Almost surely, 2^1238130780 is an apocalyptic number.

1238130780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1238130780 is an abundant number, since it is smaller than the sum of its proper divisors (2255121444).

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

1238130780 is a wasteful number, since it uses less digits than its factorization.

1238130780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157666 (or 157664 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 1238130780 is about 35187.0825730125. The cubic root of 1238130780 is about 1073.7969682338.

The spelling of 1238130780 in words is "one billion, two hundred thirty-eight million, one hundred thirty thousand, seven hundred eighty".