1373740221 has 32 divisors (see below), whose sum is σ = 2167925760. Its totient is φ = 757459584.

The previous prime is 1373740177. The next prime is 1373740253. The reversal of 1373740221 is 1220473731.

It is not a de Polignac number, because 1373740221 - 2⁶ = 1373740157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1373744221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65785 + ... + 84113.

It is an arithmetic number, because the mean of its divisors is an integer number (67747680).

Almost surely, 2^1373740221 is an apocalyptic number.

It is an amenable number.

1373740221 is a deficient number, since it is larger than the sum of its proper divisors (794185539).

1373740221 is a wasteful number, since it uses less digits than its factorization.

1373740221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18465.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 1373740221 is about 37064.0016862724. The cubic root of 1373740221 is about 1111.6503386787.

The spelling of 1373740221 in words is "one billion, three hundred seventy-three million, seven hundred forty thousand, two hundred twenty-one".