1213739080 has 32 divisors (see below), whose sum is σ = 2732466240. Its totient is φ = 485219520.

The previous prime is 1213739077. The next prime is 1213739081. The reversal of 1213739080 is 809373121.

It is not an unprimeable number, because it can be changed into a prime (1213739081) 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, 71845 + ... + 87115.

It is an arithmetic number, because the mean of its divisors is an integer number (85389570).

Almost surely, 2^1213739080 is an apocalyptic number.

1213739080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213739080 is an abundant number, since it is smaller than the sum of its proper divisors (1518727160).

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

1213739080 is a wasteful number, since it uses less digits than its factorization.

1213739080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17269 (or 17265 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 1213739080 is about 34838.7583016387. The cubic root of 1213739080 is about 1066.6987312410.

The spelling of 1213739080 in words is "one billion, two hundred thirteen million, seven hundred thirty-nine thousand, eighty".