1375985611 has 48 divisors (see below), whose sum is σ = 1889153280. Its totient is φ = 985158720.

The previous prime is 1375985573. The next prime is 1375985621. The reversal of 1375985611 is 1165895731.

It is not a de Polignac number, because 1375985611 - 2¹³ = 1375977419 is a prime.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1375985621) 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 47 ways as a sum of consecutive naturals, for example, 2515240 + ... + 2515786.

It is an arithmetic number, because the mean of its divisors is an integer number (39357360).

Almost surely, 2^1375985611 is an apocalyptic number.

1375985611 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1375985611 is a deficient number, since it is larger than the sum of its proper divisors (513167669).

1375985611 is a wasteful number, since it uses less digits than its factorization.

1375985611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944 (or 937 counting only the distinct ones).

The product of its digits is 226800, while the sum is 46.

The square root of 1375985611 is about 37094.2800307541. The cubic root of 1375985611 is about 1112.2556762794.

The spelling of 1375985611 in words is "one billion, three hundred seventy-five million, nine hundred eighty-five thousand, six hundred eleven".