1689311051 has 16 divisors (see below), whose sum is σ = 1723623264. Its totient is φ = 1655506944.

The previous prime is 1689311021. The next prime is 1689311053. The reversal of 1689311051 is 1501139861.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1689311051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1689311053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5969156 + ... + 5969438.

It is an arithmetic number, because the mean of its divisors is an integer number (107726454).

Almost surely, 2^1689311051 is an apocalyptic number.

1689311051 is a deficient number, since it is larger than the sum of its proper divisors (34312213).

1689311051 is a wasteful number, since it uses less digits than its factorization.

1689311051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830.

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 1689311051 is about 41101.2293125157. The cubic root of 1689311051 is about 1190.9765425207.

The spelling of 1689311051 in words is "one billion, six hundred eighty-nine million, three hundred eleven thousand, fifty-one".