1371328172 has 24 divisors (see below), whose sum is σ = 2505801312. Its totient is φ = 655424000.

The previous prime is 1371328117. The next prime is 1371328177. The reversal of 1371328172 is 2718231731.

It is a super-3 number, since 3×1371328172³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1371328177) 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 7 ways as a sum of consecutive naturals, for example, 170972 + ... + 178812.

It is an arithmetic number, because the mean of its divisors is an integer number (104408388).

Almost surely, 2^1371328172 is an apocalyptic number.

It is an amenable number.

1371328172 is a deficient number, since it is larger than the sum of its proper divisors (1134473140).

1371328172 is a wasteful number, since it uses less digits than its factorization.

1371328172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9769 (or 9767 counting only the distinct ones).

The product of its digits is 14112, while the sum is 35.

The square root of 1371328172 is about 37031.4484188777. The cubic root of 1371328172 is about 1110.9993359368. Note that the first 3 decimals are identical.

The spelling of 1371328172 in words is "one billion, three hundred seventy-one million, three hundred twenty-eight thousand, one hundred seventy-two".