1490094561 has 4 divisors (see below), whose sum is σ = 1986792752. Its totient is φ = 993396372.

The previous prime is 1490094547. The next prime is 1490094569. The reversal of 1490094561 is 1654900941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1490094561 - 2³⁰ = 416352737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1490094569) 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, 248349091 + ... + 248349096.

It is an arithmetic number, because the mean of its divisors is an integer number (496698188).

Almost surely, 2^1490094561 is an apocalyptic number.

It is an amenable number.

1490094561 is a deficient number, since it is larger than the sum of its proper divisors (496698191).

1490094561 is an equidigital number, since it uses as much as digits as its factorization.

1490094561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496698190.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 1490094561 is about 38601.7429787827. The cubic root of 1490094561 is about 1142.1889206970.

The spelling of 1490094561 in words is "one billion, four hundred ninety million, ninety-four thousand, five hundred sixty-one".