1375432005 has 32 divisors (see below), whose sum is σ = 2336128128. Its totient is φ = 688640000.

The previous prime is 1375431989. The next prime is 1375432031. The reversal of 1375432005 is 5002345731.

It is not a de Polignac number, because 1375432005 - 2⁴ = 1375431989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95530 + ... + 108980.

It is an arithmetic number, because the mean of its divisors is an integer number (73004004).

Almost surely, 2^1375432005 is an apocalyptic number.

1375432005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1375432005 is a deficient number, since it is larger than the sum of its proper divisors (960696123).

1375432005 is a wasteful number, since it uses less digits than its factorization.

1375432005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13877.

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 1375432005 is about 37086.8171322372. The cubic root of 1375432005 is about 1112.1064901230.

Adding to 1375432005 its reverse (5002345731), we get a palindrome (6377777736).

The spelling of 1375432005 in words is "one billion, three hundred seventy-five million, four hundred thirty-two thousand, five".