1497171968 has 24 divisors (see below), whose sum is σ = 2993616990. Its totient is φ = 748584960.

The previous prime is 1497171967. The next prime is 1497171971. The reversal of 1497171968 is 8691717941.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 755590144 + 741581824 = 27488^2 + 27232^2 .

It is not an unprimeable number, because it can be changed into a prime (1497171967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363473 + ... + 367568.

Almost surely, 2^1497171968 is an apocalyptic number.

It is an amenable number.

1497171968 is a deficient number, since it is larger than the sum of its proper divisors (1496445022).

1497171968 is an frugal number, since it uses more digits than its factorization.

1497171968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731063 (or 731043 counting only the distinct ones).

The product of its digits is 762048, while the sum is 53.

The square root of 1497171968 is about 38693.3065012542. The cubic root of 1497171968 is about 1143.9943925263.

The spelling of 1497171968 in words is "one billion, four hundred ninety-seven million, one hundred seventy-one thousand, nine hundred sixty-eight".