1693429990 has 16 divisors (see below), whose sum is σ = 3483627552. Its totient is φ = 580604544.

The previous prime is 1693429951. The next prime is 1693430009. The reversal of 1693429990 is 999243961.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12095859 + ... + 12095998.

It is an arithmetic number, because the mean of its divisors is an integer number (217726722).

Almost surely, 2^1693429990 is an apocalyptic number.

1693429990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1693429990 is an abundant number, since it is smaller than the sum of its proper divisors (1790197562).

1693429990 is a wasteful number, since it uses less digits than its factorization.

1693429990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24191871.

The product of its (nonzero) digits is 944784, while the sum is 52.

The square root of 1693429990 is about 41151.3060546078. The cubic root of 1693429990 is about 1191.9437175016.

The spelling of 1693429990 in words is "one billion, six hundred ninety-three million, four hundred twenty-nine thousand, nine hundred ninety".