1948023664 has 20 divisors (see below), whose sum is σ = 3854601504. Its totient is φ = 953287808.

The previous prime is 1948023661. The next prime is 1948023673. The reversal of 1948023664 is 4663208491.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1948023664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1948023661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1294477 + ... + 1295980.

Almost surely, 2^1948023664 is an apocalyptic number.

It is an amenable number.

1948023664 is a deficient number, since it is larger than the sum of its proper divisors (1906577840).

1948023664 is a wasteful number, since it uses less digits than its factorization.

1948023664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2590512 (or 2590506 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 1948023664 is about 44136.4210601630. The cubic root of 1948023664 is about 1248.9107661180.

The spelling of 1948023664 in words is "one billion, nine hundred forty-eight million, twenty-three thousand, six hundred sixty-four".