1491526223 has 12 divisors (see below), whose sum is σ = 1656360720. Its totient is φ = 1341943680.

The previous prime is 1491526217. The next prime is 1491526237. The reversal of 1491526223 is 3226251941.

It is not a de Polignac number, because 1491526223 - 2¹⁴ = 1491509839 is a prime.

It is a super-3 number, since 3×1491526223³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491526213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51803 + ... + 75276.

It is an arithmetic number, because the mean of its divisors is an integer number (138030060).

Almost surely, 2^1491526223 is an apocalyptic number.

1491526223 is a deficient number, since it is larger than the sum of its proper divisors (164834497).

1491526223 is a wasteful number, since it uses less digits than its factorization.

1491526223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127198 (or 127187 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 1491526223 is about 38620.2825339225. The cubic root of 1491526223 is about 1142.5546033177.

The spelling of 1491526223 in words is "one billion, four hundred ninety-one million, five hundred twenty-six thousand, two hundred twenty-three".