1699134426 has 48 divisors (see below), whose sum is σ = 4031883648. Its totient is φ = 512870400.

The previous prime is 1699134391. The next prime is 1699134487. The reversal of 1699134426 is 6244319961.

1699134426 is a `hidden beast` number, since 1 + 6 + 99 + 134 + 426 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34191 + ... + 67581.

It is an arithmetic number, because the mean of its divisors is an integer number (83997576).

Almost surely, 2^1699134426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1699134426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2015941824).

1699134426 is an abundant number, since it is smaller than the sum of its proper divisors (2332749222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1699134426 is a wasteful number, since it uses less digits than its factorization.

1699134426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33667 (or 33664 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 1699134426 is about 41220.5582931624. The cubic root of 1699134426 is about 1193.2805991039.

The spelling of 1699134426 in words is "one billion, six hundred ninety-nine million, one hundred thirty-four thousand, four hundred twenty-six".