1909342680 has 128 divisors (see below), whose sum is σ = 6890918400. Its totient is φ = 413448192.

The previous prime is 1909342679. The next prime is 1909342697. The reversal of 1909342680 is 862439091.

1909342680 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43857 + ... + 75776.

It is an arithmetic number, because the mean of its divisors is an integer number (53835300).

Almost surely, 2^1909342680 is an apocalyptic number.

1909342680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1909342680 is an abundant number, since it is smaller than the sum of its proper divisors (4981575720).

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

1909342680 is a wasteful number, since it uses less digits than its factorization.

1909342680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119673 (or 119669 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 1909342680 is about 43696.0259062538. The cubic root of 1909342680 is about 1240.5890974727.

The spelling of 1909342680 in words is "one billion, nine hundred nine million, three hundred forty-two thousand, six hundred eighty".