1370320073 has 2 divisors, whose sum is σ = 1370320074. Its totient is φ = 1370320072.

The previous prime is 1370320051. The next prime is 1370320111. The reversal of 1370320073 is 3700230731.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1245595849 + 124724224 = 35293^2 + 11168^2 .

It is a cyclic number.

It is not a de Polignac number, because 1370320073 - 2¹⁶ = 1370254537 is a prime.

It is not a weakly prime, because it can be changed into another prime (1370320873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 685160036 + 685160037.

It is an arithmetic number, because the mean of its divisors is an integer number (685160037).

Almost surely, 2^1370320073 is an apocalyptic number.

It is an amenable number.

1370320073 is a deficient number, since it is larger than the sum of its proper divisors (1).

1370320073 is an equidigital number, since it uses as much as digits as its factorization.

1370320073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2646, while the sum is 26.

The square root of 1370320073 is about 37017.8345260768. The cubic root of 1370320073 is about 1110.7270276980.

The spelling of 1370320073 in words is "one billion, three hundred seventy million, three hundred twenty thousand, seventy-three".