1690134984 has 96 divisors (see below), whose sum is σ = 4796457120. Its totient is φ = 557508096.

The previous prime is 1690134983. The next prime is 1690135001. The reversal of 1690134984 is 4894310961.

It is not an unprimeable number, because it can be changed into a prime (1690134983) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 184087 + ... + 193049.

It is an arithmetic number, because the mean of its divisors is an integer number (49963095).

Almost surely, 2^1690134984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1690134984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2398228560).

1690134984 is an abundant number, since it is smaller than the sum of its proper divisors (3106322136).

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

1690134984 is an equidigital number, since it uses as much as digits as its factorization.

1690134984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9081 (or 9065 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 1690134984 is about 41111.2513066679. The cubic root of 1690134984 is about 1191.1701372968.

The spelling of 1690134984 in words is "one billion, six hundred ninety million, one hundred thirty-four thousand, nine hundred eighty-four".