1490349869 has 2 divisors, whose sum is σ = 1490349870. Its totient is φ = 1490349868.

The previous prime is 1490349851. The next prime is 1490349871. The reversal of 1490349869 is 9689430941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1490346025 + 3844 = 38605^2 + 62^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1490349869 is a prime.

It is a super-2 number, since 2×1490349869² = 4442285464056634322, which contains 22 as substring.

Together with 1490349871, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1490349869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1490649869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 745174934 + 745174935.

It is an arithmetic number, because the mean of its divisors is an integer number (745174935).

Almost surely, 2^1490349869 is an apocalyptic number.

It is an amenable number.

1490349869 is a deficient number, since it is larger than the sum of its proper divisors (1).

1490349869 is an equidigital number, since it uses as much as digits as its factorization.

1490349869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1679616, while the sum is 53.

The square root of 1490349869 is about 38605.0497862650. The cubic root of 1490349869 is about 1142.2541499614.

The spelling of 1490349869 in words is "one billion, four hundred ninety million, three hundred forty-nine thousand, eight hundred sixty-nine".