1610904040 has 16 divisors (see below), whose sum is σ = 3624534180. Its totient is φ = 644361600.

The previous prime is 1610904023. The next prime is 1610904041. The reversal of 1610904040 is 404090161.

It can be written as a sum of positive squares in 2 ways, for example, as 1566734724 + 44169316 = 39582^2 + 6646^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1610903996 and 1610904014.

It is not an unprimeable number, because it can be changed into a prime (1610904041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20136261 + ... + 20136340.

Almost surely, 2^1610904040 is an apocalyptic number.

1610904040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1610904040 is an abundant number, since it is smaller than the sum of its proper divisors (2013630140).

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

1610904040 is a wasteful number, since it uses less digits than its factorization.

1610904040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40272612 (or 40272608 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1610904040 is about 40136.0690651190. The cubic root of 1610904040 is about 1172.2580494662.

The spelling of 1610904040 in words is "one billion, six hundred ten million, nine hundred four thousand, forty".