1373989655 has 8 divisors (see below), whose sum is σ = 1735566000. Its totient is φ = 1041339456.

The previous prime is 1373989601. The next prime is 1373989667. The reversal of 1373989655 is 5569893731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1373989655 - 2¹² = 1373985559 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1373989655.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7231430 + ... + 7231619.

It is an arithmetic number, because the mean of its divisors is an integer number (216945750).

Almost surely, 2^1373989655 is an apocalyptic number.

1373989655 is a deficient number, since it is larger than the sum of its proper divisors (361576345).

1373989655 is a wasteful number, since it uses less digits than its factorization.

1373989655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14463073.

The product of its digits is 6123600, while the sum is 56.

The square root of 1373989655 is about 37067.3664427350. The cubic root of 1373989655 is about 1111.7176164666.

The spelling of 1373989655 in words is "one billion, three hundred seventy-three million, nine hundred eighty-nine thousand, six hundred fifty-five".