1590340249 has 4 divisors (see below), whose sum is σ = 1590476836. Its totient is φ = 1590203664.

The previous prime is 1590340247. The next prime is 1590340303. The reversal of 1590340249 is 9420430951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9420430951 = 199 ⋅47338849.

It can be written as a sum of positive squares in 2 ways, for example, as 850772224 + 739568025 = 29168^2 + 27195^2 .

It is a cyclic number.

It is not a de Polignac number, because 1590340249 - 2¹ = 1590340247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1590340247) 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 3 ways as a sum of consecutive naturals, for example, 49014 + ... + 74719.

It is an arithmetic number, because the mean of its divisors is an integer number (397619209).

Almost surely, 2^1590340249 is an apocalyptic number.

It is an amenable number.

1590340249 is a deficient number, since it is larger than the sum of its proper divisors (136587).

1590340249 is a wasteful number, since it uses less digits than its factorization.

1590340249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136586.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 1590340249 is about 39879.0703126339. The cubic root of 1590340249 is about 1167.2485688800.

The spelling of 1590340249 in words is "one billion, five hundred ninety million, three hundred forty thousand, two hundred forty-nine".