1491579 has 18 divisors (see below), whose sum is σ = 2233140. Its totient is φ = 959088.

The previous prime is 1491577. The next prime is 1491583. The reversal of 1491579 is 9751941.

It is not a de Polignac number, because 1491579 - 2¹ = 1491577 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1491571) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 25252 + ... + 25310.

2^1491579 is an apocalyptic number.

1491579 is a deficient number, since it is larger than the sum of its proper divisors (741561).

1491579 is an equidigital number, since it uses as much as digits as its factorization.

1491579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 115 counting only the distinct ones).

The product of its digits is 11340, while the sum is 36.

The square root of 1491579 is about 1221.3021739111. The cubic root of 1491579 is about 114.2568079423.

It can be divided in two parts, 149 and 1579, that added together give a cube (1728 = 12³).

The spelling of 1491579 in words is "one million, four hundred ninety-one thousand, five hundred seventy-nine".