1906980264899 has 4 divisors (see below), whose sum is σ = 1921995857664. Its totient is φ = 1891964672136.

The previous prime is 1906980264887. The next prime is 1906980265061. The reversal of 1906980264899 is 9984620896091.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1906980264899 is a prime.

It is a super-2 number, since 2×1906980264899² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1906980269899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7507796192 + ... + 7507796445.

It is an arithmetic number, because the mean of its divisors is an integer number (480498964416).

Almost surely, 2^{1906980264899} is an apocalyptic number.

1906980264899 is a deficient number, since it is larger than the sum of its proper divisors (15015592765).

1906980264899 is a wasteful number, since it uses less digits than its factorization.

1906980264899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15015592764.

The product of its (nonzero) digits is 120932352, while the sum is 71.

The spelling of 1906980264899 in words is "one trillion, nine hundred six billion, nine hundred eighty million, two hundred sixty-four thousand, eight hundred ninety-nine".