1490813 has 2 divisors, whose sum is σ = 1490814. Its totient is φ = 1490812.

The previous prime is 1490807. The next prime is 1490833. The reversal of 1490813 is 3180941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 917764 + 573049 = 958^2 + 757^2 .

It is a cyclic number.

It is not a de Polignac number, because 1490813 - 2⁸ = 1490557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1490833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 745406 + 745407.

It is an arithmetic number, because the mean of its divisors is an integer number (745407).

2^1490813 is an apocalyptic number.

It is an amenable number.

1490813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1490813 is an equidigital number, since it uses as much as digits as its factorization.

1490813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1490813 is about 1220.9885339347. The cubic root of 1490813 is about 114.2372457421.

The spelling of 1490813 in words is "one million, four hundred ninety thousand, eight hundred thirteen".