1565380373 has 2 divisors, whose sum is σ = 1565380374. Its totient is φ = 1565380372.

The previous prime is 1565380343. The next prime is 1565380403. The reversal of 1565380373 is 3730835651.

It is a balanced prime because it is at equal distance from previous prime (1565380343) and next prime (1565380403).

It can be written as a sum of positive squares in only one way, i.e., 1063933924 + 501446449 = 32618^2 + 22393^2 .

It is a cyclic number.

It is not a de Polignac number, because 1565380373 - 2¹⁰ = 1565379349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1565380373.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1565380343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 782690186 + 782690187.

It is an arithmetic number, because the mean of its divisors is an integer number (782690187).

Almost surely, 2^1565380373 is an apocalyptic number.

It is an amenable number.

1565380373 is a deficient number, since it is larger than the sum of its proper divisors (1).

1565380373 is an equidigital number, since it uses as much as digits as its factorization.

1565380373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 41.

The square root of 1565380373 is about 39564.8881332931. Note that the first 3 decimals coincide. The cubic root of 1565380373 is about 1161.1098110841.

The spelling of 1565380373 in words is "one billion, five hundred sixty-five million, three hundred eighty thousand, three hundred seventy-three".