1373378801 has 2 divisors, whose sum is σ = 1373378802. Its totient is φ = 1373378800.

The previous prime is 1373378761. The next prime is 1373378803. The reversal of 1373378801 is 1088733731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1267288801 + 106090000 = 35599^2 + 10300^2 .

It is an emirp because it is prime and its reverse (1088733731) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1373378801 is a prime.

Together with 1373378803, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1373378803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686689400 + 686689401.

It is an arithmetic number, because the mean of its divisors is an integer number (686689401).

Almost surely, 2^1373378801 is an apocalyptic number.

It is an amenable number.

1373378801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1373378801 is an equidigital number, since it uses as much as digits as its factorization.

1373378801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 1373378801 is about 37059.1257452196. The cubic root of 1373378801 is about 1111.5528413744.

The spelling of 1373378801 in words is "one billion, three hundred seventy-three million, three hundred seventy-eight thousand, eight hundred one".