1699258890 has 64 divisors (see below), whose sum is σ = 4671074304. Its totient is φ = 387547968.

The previous prime is 1699258861. The next prime is 1699258927. The reversal of 1699258890 is 988529961.

It is a self number, because there is not a number n which added to its sum of digits gives 1699258890.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89407 + ... + 106733.

It is an arithmetic number, because the mean of its divisors is an integer number (72985536).

Almost surely, 2^1699258890 is an apocalyptic number.

1699258890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1699258890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2335537152).

1699258890 is an abundant number, since it is smaller than the sum of its proper divisors (2971815414).

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

1699258890 is a wasteful number, since it uses less digits than its factorization.

1699258890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17811.

The product of its (nonzero) digits is 2799360, while the sum is 57.

The square root of 1699258890 is about 41222.0679976151. The cubic root of 1699258890 is about 1193.3097348898.

The spelling of 1699258890 in words is "one billion, six hundred ninety-nine million, two hundred fifty-eight thousand, eight hundred ninety".