1699889961 has 32 divisors (see below), whose sum is σ = 2829431808. Its totient is φ = 881922240.

The previous prime is 1699889953. The next prime is 1699889969.

1699889961 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (1699889953) and next prime (1699889969).

It is not a de Polignac number, because 1699889961 - 2³ = 1699889953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1699889892 and 1699889901.

It is not an unprimeable number, because it can be changed into a prime (1699889969) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 192730 + ... + 201356.

It is an arithmetic number, because the mean of its divisors is an integer number (88419744).

Almost surely, 2^1699889961 is an apocalyptic number.

1699889961 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1699889961 is a deficient number, since it is larger than the sum of its proper divisors (1129541847).

1699889961 is a wasteful number, since it uses less digits than its factorization.

1699889961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9501.

The product of its digits is 15116544, while the sum is 66.

The square root of 1699889961 is about 41229.7218156999. The cubic root of 1699889961 is about 1193.4574404507.

The spelling of 1699889961 in words is "one billion, six hundred ninety-nine million, eight hundred eighty-nine thousand, nine hundred sixty-one".