1953948688 has 40 divisors (see below), whose sum is σ = 3892375872. Its totient is φ = 949523328.

The previous prime is 1953948677. The next prime is 1953948713. The reversal of 1953948688 is 8868493591.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors.

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, 1056981 + ... + 1058827.

Almost surely, 2^1953948688 is an apocalyptic number.

It is an amenable number.

1953948688 is a deficient number, since it is larger than the sum of its proper divisors (1938427184).

1953948688 is a wasteful number, since it uses less digits than its factorization.

1953948688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3679 (or 3673 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 61.

The square root of 1953948688 is about 44203.4918077746. The cubic root of 1953948688 is about 1250.1756954104.

The spelling of 1953948688 in words is "one billion, nine hundred fifty-three million, nine hundred forty-eight thousand, six hundred eighty-eight".