1640007034 has 8 divisors (see below), whose sum is σ = 2604717108. Its totient is φ = 771768000.

The previous prime is 1640007029. The next prime is 1640007041. The reversal of 1640007034 is 4307000461.

It can be written as a sum of positive squares in 2 ways, for example, as 1640007009 + 25 = 40497^2 + 5^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24117717 + ... + 24117784.

Almost surely, 2^1640007034 is an apocalyptic number.

1640007034 is a deficient number, since it is larger than the sum of its proper divisors (964710074).

1640007034 is a wasteful number, since it uses less digits than its factorization.

1640007034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48235520.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 1640007034 is about 40497.0003086648. Note that the first 3 decimals coincide. The cubic root of 1640007034 is about 1179.2753939696.

Subtracting from 1640007034 its sum of digits (25), we obtain a square (1640007009 = 40497²).

Adding to 1640007034 its reverse (4307000461), we get a palindrome (5947007495).

The spelling of 1640007034 in words is "one billion, six hundred forty million, seven thousand, thirty-four".