1370447176921 has 3 divisors (see below), whose sum is σ = 1370448347583. Its totient is φ = 1370446006260.

The previous prime is 1370447176907. The next prime is 1370447176937. The reversal of 1370447176921 is 1296717440731.

The square root of 1370447176921 is 1170661.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 8138024521 + 1362309152400 = 90211^2 + 1167180^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1370447176921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1370447176621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 585331 + ... + 1755991.

It is an arithmetic number, because the mean of its divisors is an integer number (456816115861).

Almost surely, 2^{1370447176921} is an apocalyptic number.

1370447176921 is the 1170661-st square number.

1370447176921 is the 585331-st centered octagonal number.

It is an amenable number.

1370447176921 is a deficient number, since it is larger than the sum of its proper divisors (1170662).

1370447176921 is an frugal number, since it uses more digits than its factorization.

1370447176921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2341322 (or 1170661 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 52.

The spelling of 1370447176921 in words is "one trillion, three hundred seventy billion, four hundred forty-seven million, one hundred seventy-six thousand, nine hundred twenty-one".