1600916491 has 4 divisors (see below), whose sum is σ = 1634978592. Its totient is φ = 1566854392.

The previous prime is 1600916423. The next prime is 1600916507. The reversal of 1600916491 is 1946190061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1946190061 = 1487 ⋅1308803.

It is a cyclic number.

It is not a de Polignac number, because 1600916491 - 2¹⁷ = 1600785419 is a prime.

It is a super-2 number, since 2×1600916491² = 5125867222311506162, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1600916491.

It is not an unprimeable number, because it can be changed into a prime (1600910491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17030980 + ... + 17031073.

It is an arithmetic number, because the mean of its divisors is an integer number (408744648).

Almost surely, 2^1600916491 is an apocalyptic number.

1600916491 is a deficient number, since it is larger than the sum of its proper divisors (34062101).

1600916491 is an equidigital number, since it uses as much as digits as its factorization.

1600916491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34062100.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 1600916491 is about 40011.4544974311. The cubic root of 1600916491 is about 1169.8303723208.

The spelling of 1600916491 in words is "one billion, six hundred million, nine hundred sixteen thousand, four hundred ninety-one".