1687429244 has 12 divisors (see below), whose sum is σ = 2954053368. Its totient is φ = 843414000.

The previous prime is 1687429229. The next prime is 1687429279. The reversal of 1687429244 is 4429247861.

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, 62282 + ... + 85169.

It is an arithmetic number, because the mean of its divisors is an integer number (246171114).

Almost surely, 2^1687429244 is an apocalyptic number.

It is an amenable number.

1687429244 is a deficient number, since it is larger than the sum of its proper divisors (1266624124).

1687429244 is a wasteful number, since it uses less digits than its factorization.

1687429244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150316 (or 150314 counting only the distinct ones).

The product of its digits is 774144, while the sum is 47.

The square root of 1687429244 is about 41078.3305892535. The cubic root of 1687429244 is about 1190.5341490178.

The spelling of 1687429244 in words is "one billion, six hundred eighty-seven million, four hundred twenty-nine thousand, two hundred forty-four".