1949666976 has 48 divisors (see below), whose sum is σ = 5686531200. Its totient is φ = 649888704.

The previous prime is 1949666941. The next prime is 1949666987. The reversal of 1949666976 is 6796669491.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1127416 + ... + 1129143.

It is an arithmetic number, because the mean of its divisors is an integer number (118469400).

Almost surely, 2^1949666976 is an apocalyptic number.

1949666976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1949666976 is an abundant number, since it is smaller than the sum of its proper divisors (3736864224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1949666976 is a wasteful number, since it uses less digits than its factorization.

1949666976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256578 (or 2256564 counting only the distinct ones).

The product of its digits is 26453952, while the sum is 63.

The square root of 1949666976 is about 44155.0334163615. The cubic root of 1949666976 is about 1249.2618524096.

The spelling of 1949666976 in words is "one billion, nine hundred forty-nine million, six hundred sixty-six thousand, nine hundred seventy-six".