1902143813 has 2 divisors, whose sum is σ = 1902143814. Its totient is φ = 1902143812.

The previous prime is 1902143809. The next prime is 1902143891. The reversal of 1902143813 is 3183412091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1850548324 + 51595489 = 43018^2 + 7183^2 .

It is an emirp because it is prime and its reverse (3183412091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1902143813 - 2² = 1902143809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1902143813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1902143513) 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 as a sum of consecutive naturals, namely, 951071906 + 951071907.

It is an arithmetic number, because the mean of its divisors is an integer number (951071907).

Almost surely, 2^1902143813 is an apocalyptic number.

It is an amenable number.

1902143813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1902143813 is an equidigital number, since it uses as much as digits as its factorization.

1902143813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 1902143813 is about 43613.5737242432. The cubic root of 1902143813 is about 1239.0279871725.

The spelling of 1902143813 in words is "one billion, nine hundred two million, one hundred forty-three thousand, eight hundred thirteen".