1610491 has 4 divisors (see below), whose sum is σ = 1627192. Its totient is φ = 1593792.

The previous prime is 1610473. The next prime is 1610501. The reversal of 1610491 is 1940161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1610491 - 2¹¹ = 1608443 is a prime.

It is a super-2 number, since 2×1610491² = 5187362522162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1610431) 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, 8205 + ... + 8398.

It is an arithmetic number, because the mean of its divisors is an integer number (406798).

2^1610491 is an apocalyptic number.

1610491 is a deficient number, since it is larger than the sum of its proper divisors (16701).

1610491 is an equidigital number, since it uses as much as digits as its factorization.

1610491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16700.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1610491 is about 1269.0512204005. The cubic root of 1610491 is about 117.2157850894.

The spelling of 1610491 in words is "one million, six hundred ten thousand, four hundred ninety-one".