1690419028 has 12 divisors (see below), whose sum is σ = 2977825312. Its totient is φ = 839611800.

The previous prime is 1690419001. The next prime is 1690419103. The reversal of 1690419028 is 8209140961.

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, 1398750 + ... + 1399957.

Almost surely, 2^1690419028 is an apocalyptic number.

It is an amenable number.

1690419028 is a deficient number, since it is larger than the sum of its proper divisors (1287406284).

1690419028 is a wasteful number, since it uses less digits than its factorization.

1690419028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2798862 (or 2798860 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 1690419028 is about 41114.7057389446. The cubic root of 1690419028 is about 1191.2368628900.

Adding to 1690419028 its reverse (8209140961), we get a palindrome (9899559989).

The spelling of 1690419028 in words is "one billion, six hundred ninety million, four hundred nineteen thousand, twenty-eight".