1375137639 has 24 divisors (see below), whose sum is σ = 2074555392. Its totient is φ = 876102480.

The previous prime is 1375137613. The next prime is 1375137641. The reversal of 1375137639 is 9367315731.

1375137639 is a `hidden beast` number, since 1 + 3 + 7 + 5 + 1 + 3 + 7 + 639 = 666.

It is not a de Polignac number, because 1375137639 - 2²⁹ = 838266727 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1375137594 and 1375137603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375130639) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 297234 + ... + 301824.

It is an arithmetic number, because the mean of its divisors is an integer number (86439808).

Almost surely, 2^1375137639 is an apocalyptic number.

1375137639 is a deficient number, since it is larger than the sum of its proper divisors (699417753).

1375137639 is a wasteful number, since it uses less digits than its factorization.

1375137639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6067 (or 6064 counting only the distinct ones).

The product of its digits is 357210, while the sum is 45.

The square root of 1375137639 is about 37082.8483129330. The cubic root of 1375137639 is about 1112.0271478522.

The spelling of 1375137639 in words is "one billion, three hundred seventy-five million, one hundred thirty-seven thousand, six hundred thirty-nine".