1949666975 has 12 divisors (see below), whose sum is σ = 2418189720. Its totient is φ = 1559344800.

The previous prime is 1949666941. The next prime is 1949666987. The reversal of 1949666975 is 5796669491.

It is not a de Polignac number, because 1949666975 - 2¹² = 1949662879 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134585 + ... + 148365.

It is an arithmetic number, because the mean of its divisors is an integer number (201515810).

Almost surely, 2^1949666975 is an apocalyptic number.

1949666975 is a deficient number, since it is larger than the sum of its proper divisors (468522745).

1949666975 is a wasteful number, since it uses less digits than its factorization.

1949666975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19450 (or 19445 counting only the distinct ones).

The product of its digits is 22044960, while the sum is 62.

The square root of 1949666975 is about 44155.0334050378. The cubic root of 1949666975 is about 1249.2618521961.

The spelling of 1949666975 in words is "one billion, nine hundred forty-nine million, six hundred sixty-six thousand, nine hundred seventy-five".