1590342349 has 4 divisors (see below), whose sum is σ = 1590623136. Its totient is φ = 1590061564.

The previous prime is 1590342331. The next prime is 1590342359. The reversal of 1590342349 is 9432430951.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1590342349 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1590342359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131719 + ... + 143284.

It is an arithmetic number, because the mean of its divisors is an integer number (397655784).

Almost surely, 2^1590342349 is an apocalyptic number.

It is an amenable number.

1590342349 is a deficient number, since it is larger than the sum of its proper divisors (280787).

1590342349 is an equidigital number, since it uses as much as digits as its factorization.

1590342349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280786.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 1590342349 is about 39879.0966422260. The cubic root of 1590342349 is about 1167.2490826528.

The spelling of 1590342349 in words is "one billion, five hundred ninety million, three hundred forty-two thousand, three hundred forty-nine".