1948021317 has 24 divisors (see below), whose sum is σ = 3203074368. Its totient is φ = 1129286400.

The previous prime is 1948021289. The next prime is 1948021333. The reversal of 1948021317 is 7131208491.

It is a happy number.

It is not a de Polignac number, because 1948021317 - 2²⁸ = 1679585861 is a prime.

It is a super-3 number, since 3×1948021317³ (a number of 29 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1948021367) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 425484 + ... + 430037.

It is an arithmetic number, because the mean of its divisors is an integer number (133461432).

Almost surely, 2^1948021317 is an apocalyptic number.

It is an amenable number.

1948021317 is a deficient number, since it is larger than the sum of its proper divisors (1255053051).

1948021317 is a wasteful number, since it uses less digits than its factorization.

1948021317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855561 (or 855558 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 1948021317 is about 44136.3944721360. The cubic root of 1948021317 is about 1248.9102645507.

The spelling of 1948021317 in words is "one billion, nine hundred forty-eight million, twenty-one thousand, three hundred seventeen".