1613409 has 8 divisors (see below), whose sum is σ = 2458560. Its totient is φ = 921936.

The previous prime is 1613407. The next prime is 1613411. The reversal of 1613409 is 9043161.

It is an interprime number because it is at equal distance from previous prime (1613407) and next prime (1613411).

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

It is not a de Polignac number, because 1613409 - 2¹ = 1613407 is a prime.

1613409 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1613407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38394 + ... + 38435.

It is an arithmetic number, because the mean of its divisors is an integer number (307320).

2^1613409 is an apocalyptic number.

It is an amenable number.

1613409 is a deficient number, since it is larger than the sum of its proper divisors (845151).

1613409 is an equidigital number, since it uses as much as digits as its factorization.

1613409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76839.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 1613409 is about 1270.2003778932. The cubic root of 1613409 is about 117.2865356232.

It can be divided in two parts, 161 and 3409, that added together give a triangular number (3570 = T₈₄).

The spelling of 1613409 in words is "one million, six hundred thirteen thousand, four hundred nine".