1906917998 has 8 divisors (see below), whose sum is σ = 2860663008. Its totient is φ = 953363664.

The previous prime is 1906917989. The next prime is 1906918003. The reversal of 1906917998 is 8997196091.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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, 19286 + ... + 64697.

It is an arithmetic number, because the mean of its divisors is an integer number (357582876).

Almost surely, 2^1906917998 is an apocalyptic number.

1906917998 is a deficient number, since it is larger than the sum of its proper divisors (953745010).

1906917998 is a wasteful number, since it uses less digits than its factorization.

1906917998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95338.

The product of its (nonzero) digits is 2204496, while the sum is 59.

The square root of 1906917998 is about 43668.2722122138. The cubic root of 1906917998 is about 1240.0637319827.

The spelling of 1906917998 in words is "one billion, nine hundred six million, nine hundred seventeen thousand, nine hundred ninety-eight".