1006381975 has 12 divisors (see below), whose sum is σ = 1251270856. Its totient is φ = 802939680.

The previous prime is 1006381969. The next prime is 1006381979. The reversal of 1006381975 is 5791836001.

It is not a de Polignac number, because 1006381975 - 2¹⁵ = 1006349207 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1006381979) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44637 + ... + 63286.

Almost surely, 2^1006381975 is an apocalyptic number.

1006381975 is a deficient number, since it is larger than the sum of its proper divisors (244888881).

1006381975 is a wasteful number, since it uses less digits than its factorization.

1006381975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108306 (or 108301 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 1006381975 is about 31723.5240003377. The cubic root of 1006381975 is about 1002.1228154658.

The spelling of 1006381975 in words is "one billion, six million, three hundred eighty-one thousand, nine hundred seventy-five".