1906340780 has 12 divisors (see below), whose sum is σ = 4003315680. Its totient is φ = 762536304.

The previous prime is 1906340773. The next prime is 1906340819. The reversal of 1906340780 is 870436091.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47658500 + ... + 47658539.

It is an arithmetic number, because the mean of its divisors is an integer number (333609640).

Almost surely, 2^1906340780 is an apocalyptic number.

1906340780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1906340780 is an abundant number, since it is smaller than the sum of its proper divisors (2096974900).

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

1906340780 is a wasteful number, since it uses less digits than its factorization.

1906340780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95317048 (or 95317046 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 1906340780 is about 43661.6625885914. The cubic root of 1906340780 is about 1239.9385982430.

The spelling of 1906340780 in words is "one billion, nine hundred six million, three hundred forty thousand, seven hundred eighty".