1690880298 has 16 divisors (see below), whose sum is σ = 3386144736. Its totient is φ = 562896080.

The previous prime is 1690880251. The next prime is 1690880309. The reversal of 1690880298 is 8920880961.

It is a self number, because there is not a number n which added to its sum of digits gives 1690880298.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177648 + ... + 186923.

It is an arithmetic number, because the mean of its divisors is an integer number (211634046).

Almost surely, 2^1690880298 is an apocalyptic number.

1690880298 is an abundant number, since it is smaller than the sum of its proper divisors (1695264438).

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

1690880298 is a wasteful number, since it uses less digits than its factorization.

1690880298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365349.

The product of its (nonzero) digits is 497664, while the sum is 51.

The square root of 1690880298 is about 41120.3149063817. The cubic root of 1690880298 is about 1191.3452052293.

The spelling of 1690880298 in words is "one billion, six hundred ninety million, eight hundred eighty thousand, two hundred ninety-eight".