1490190820 has 12 divisors (see below), whose sum is σ = 3129400764. Its totient is φ = 596076320.

The previous prime is 1490190803. The next prime is 1490190827. The reversal of 1490190820 is 280910941.

It can be written as a sum of positive squares in 2 ways, for example, as 333646756 + 1156544064 = 18266^2 + 34008^2 .

It is not an unprimeable number, because it can be changed into a prime (1490190827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37254751 + ... + 37254790.

It is an arithmetic number, because the mean of its divisors is an integer number (260783397).

Almost surely, 2^1490190820 is an apocalyptic number.

1490190820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1490190820 is an abundant number, since it is smaller than the sum of its proper divisors (1639209944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1490190820 is a wasteful number, since it uses less digits than its factorization.

1490190820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74509550 (or 74509548 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 1490190820 is about 38602.9897805856. The cubic root of 1490190820 is about 1142.2135150189.

The spelling of 1490190820 in words is "one billion, four hundred ninety million, one hundred ninety thousand, eight hundred twenty".