1375201785 has 16 divisors (see below), whose sum is σ = 2203187904. Its totient is φ = 732485952.

The previous prime is 1375201783. The next prime is 1375201853. The reversal of 1375201785 is 5871025731.

It is not a de Polignac number, because 1375201785 - 2¹ = 1375201783 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1375201783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47707 + ... + 70896.

It is an arithmetic number, because the mean of its divisors is an integer number (137699244).

Almost surely, 2^1375201785 is an apocalyptic number.

1375201785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1375201785 is a deficient number, since it is larger than the sum of its proper divisors (827986119).

1375201785 is a wasteful number, since it uses less digits than its factorization.

1375201785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119384.

The product of its (nonzero) digits is 58800, while the sum is 39.

The square root of 1375201785 is about 37083.7132040469. The cubic root of 1375201785 is about 1112.0444384812.

The spelling of 1375201785 in words is "one billion, three hundred seventy-five million, two hundred one thousand, seven hundred eighty-five".