1690097998 has 8 divisors (see below), whose sum is σ = 2549153880. Its totient is φ = 840380040.

The previous prime is 1690097963. The next prime is 1690097999. The reversal of 1690097998 is 8997900961.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1690097999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2334028 + ... + 2334751.

It is an arithmetic number, because the mean of its divisors is an integer number (318644235).

Almost surely, 2^1690097998 is an apocalyptic number.

1690097998 is a deficient number, since it is larger than the sum of its proper divisors (859055882).

1690097998 is a wasteful number, since it uses less digits than its factorization.

1690097998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4668962.

The product of its (nonzero) digits is 2204496, while the sum is 58.

The square root of 1690097998 is about 41110.8014760111. The cubic root of 1690097998 is about 1191.1614482590.

The spelling of 1690097998 in words is "one billion, six hundred ninety million, ninety-seven thousand, nine hundred ninety-eight".