1689438364 has 12 divisors (see below), whose sum is σ = 2962195488. Its totient is φ = 843096800.

The previous prime is 1689438329. The next prime is 1689438383. The reversal of 1689438364 is 4638349861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403252 + ... + 407419.

It is an arithmetic number, because the mean of its divisors is an integer number (246849624).

Almost surely, 2^1689438364 is an apocalyptic number.

It is an amenable number.

1689438364 is a deficient number, since it is larger than the sum of its proper divisors (1272757124).

1689438364 is a wasteful number, since it uses less digits than its factorization.

1689438364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811196 (or 811194 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 52.

The square root of 1689438364 is about 41102.7780569635. The cubic root of 1689438364 is about 1191.0064606319.

The spelling of 1689438364 in words is "one billion, six hundred eighty-nine million, four hundred thirty-eight thousand, three hundred sixty-four".