1601661034 has 4 divisors (see below), whose sum is σ = 2402491554. Its totient is φ = 800830516.

The previous prime is 1601660987. The next prime is 1601661041. The reversal of 1601661034 is 4301661061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4301661061 = 113 ⋅38067797.

It can be written as a sum of positive squares in only one way, i.e., 1585234225 + 16426809 = 39815^2 + 4053^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1601660993 and 1601661011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400415257 + ... + 400415260.

Almost surely, 2^1601661034 is an apocalyptic number.

1601661034 is a deficient number, since it is larger than the sum of its proper divisors (800830520).

1601661034 is an equidigital number, since it uses as much as digits as its factorization.

1601661034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800830519.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1601661034 is about 40020.7575390572. The cubic root of 1601661034 is about 1170.0116963790.

The spelling of 1601661034 in words is "one billion, six hundred one million, six hundred sixty-one thousand, thirty-four".