1491839470 has 16 divisors (see below), whose sum is σ = 2929430448. Its totient is φ = 542487040.

The previous prime is 1491839441. The next prime is 1491839477. The reversal of 1491839470 is 749381941.

It is a super-4 number, since 4×1491839470⁴ (a number of 38 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1491839470.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491839477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6780979 + ... + 6781198.

It is an arithmetic number, because the mean of its divisors is an integer number (183089403).

Almost surely, 2^1491839470 is an apocalyptic number.

1491839470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1491839470 is a deficient number, since it is larger than the sum of its proper divisors (1437590978).

1491839470 is a wasteful number, since it uses less digits than its factorization.

1491839470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13562195.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 1491839470 is about 38624.3377936762. The cubic root of 1491839470 is about 1142.6345833060.

The spelling of 1491839470 in words is "one billion, four hundred ninety-one million, eight hundred thirty-nine thousand, four hundred seventy".