1947489053 has 8 divisors (see below), whose sum is σ = 1995766080. Its totient is φ = 1899249120.

The previous prime is 1947489041. The next prime is 1947489059. The reversal of 1947489053 is 3509847491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1947489053 - 2⁸ = 1947488797 is a prime.

It is a super-2 number, since 2×1947489053² = 7585427223109673618, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1947488992 and 1947489010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1947489059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118526 + ... + 133952.

It is an arithmetic number, because the mean of its divisors is an integer number (249470760).

Almost surely, 2^1947489053 is an apocalyptic number.

It is an amenable number.

1947489053 is a deficient number, since it is larger than the sum of its proper divisors (48277027).

1947489053 is a wasteful number, since it uses less digits than its factorization.

1947489053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18547.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The square root of 1947489053 is about 44130.3642971594. The cubic root of 1947489053 is about 1248.7965062942.

The spelling of 1947489053 in words is "one billion, nine hundred forty-seven million, four hundred eighty-nine thousand, fifty-three".